{"id":500209,"date":"2026-08-06T14:01:00","date_gmt":"2026-08-06T04:01:00","guid":{"rendered":"https:\/\/science.nasa.gov\/earth\/earth-observatory\/how-the-tide-turns-at-the-mouth-of-the-elbe\/"},"modified":"2026-08-06T14:01:00","modified_gmt":"2026-08-06T04:01:00","slug":"how-the-tide-turns-at-the-mouth-of-the-elbe","status":"publish","type":"post","link":"https:\/\/www.vibewire.com.au\/?p=500209","title":{"rendered":"How the Tide Turns at the Mouth of the Elbe"},"content":{"rendered":"<div id=\"\" class=\"hds-module hds-module-full alignfull wp-block-nasa-blocks-secondary-navigation\">\n<div class=\"hds-secondary-navigation-wrapper z-top width-100 padding-0\">\n<div id=\"\" class=\"hds-secondary-navigation width-full border-bottom-1px text-center hds-color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-hdsnav\"><button type=\"button\" class=\"hds-secondary-nav-mobile-button display-flex tablet:display-flex desktop:display-none width-full flex-align-center 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src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg\" alt=\"\"><br \/>\n\t\t\t\t\t<img decoding=\"async\" slot=\"second\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg\" alt=\"\"><br \/>\n\t\t\t\t<\/img-comparison-slider><\/p>\n<div class=\"curtain-view-label-wrapper curtain-view-before\">\n\t\t\t\t\t<span class=\"curtain-view-label\">August 15, 2025<\/span>\n\t\t\t\t<\/div>\n<div class=\"curtain-view-label-wrapper curtain-view-after\">\n\t\t\t\t\t<span class=\"curtain-view-label\">May 11, 2025<\/span>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<p>\t\t\t<!-- toggle view --><\/p>\n<div class=\"toggle-comparison-parent\">\n\t\t\t\t<!-- if image_1 is active the show image_1 --><\/p>\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover toggle-view-image toggle-view-before-image toggle-view-active\"><img fetchpriority=\"high\" decoding=\"async\" width=\"720\" height=\"650\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=720&#038;h=650&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-medium_large size-medium_large\" alt=\"The Elbe river in Germany into the North Sea on the left side of the image. Low tide exposes wide, light-colored tidal flats interrupted by branching channels of dark water.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"eager\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=720&#038;h=650&#038;fit=crop&#038;crop=faces%2Cfocalpoint 720w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=300&#038;h=271&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=400&#038;h=361&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=600&#038;h=542&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">The ocean\u2019s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the German coast.<\/div>\n<div class=\"hds-credits\">NASA Earth Observatory\/Lauren Dauphin<\/div>\n<\/figcaption><\/div>\n<p>\t\t\t\t<!-- if image_2 is active the show image_2 --><\/p>\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover toggle-view-image toggle-view-after-image\"><img decoding=\"async\" width=\"720\" height=\"650\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=720&#038;h=650&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-medium_large size-medium_large\" alt=\"The Elbe river in Germany into the North Sea on the left side of the image. At high tide, a handful of small islands and crescent-shaped sandbars remain exposed above the water level near shore. Ships are visible as small, bright specks on the water.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=720&#038;h=650&#038;fit=crop&#038;crop=faces%2Cfocalpoint 720w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=300&#038;h=271&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=400&#038;h=361&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=600&#038;h=542&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">The ocean\u2019s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the German coast.<\/div>\n<div class=\"hds-credits\">NASA Earth Observatory\/Lauren Dauphin<\/div>\n<\/figcaption><\/div>\n<div class=\"toggle-button-container padding-1\">\n\t\t\t\t\t<button class=\"toggle-view-before-button toggle-comparison-view-active margin-right-1px\"><span class=\"toggle-view-before-label\">August 15, 2025<\/span><\/button><button class=\"toggle-view-after-button margin-left-1px\"><span class=\"toggle-view-after-label\">May 11, 2025<\/span><\/button>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<p>\t\t\t<!-- 2-up view --><\/p>\n<div class=\"two-up-view position-relative bg-carbon-10\">\n<div class=\"grid-row\">\n<div class=\"grid-col flex-3 padding-top-4 padding-bottom-4\">\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><img decoding=\"async\" width=\"720\" height=\"650\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=720&#038;h=650&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-medium_large size-medium_large\" alt=\"The Elbe river in Germany into the North Sea on the left side of the image. Low tide exposes wide, light-colored tidal flats interrupted by branching channels of dark water.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=720&#038;h=650&#038;fit=crop&#038;crop=faces%2Cfocalpoint 720w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=300&#038;h=271&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=400&#038;h=361&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815.jpg?w=600&#038;h=542&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">The ocean\u2019s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the German coast.<\/div>\n<div class=\"hds-credits\">NASA Earth Observatory\/Lauren Dauphin<\/div>\n<\/figcaption><\/div>\n<\/p>\n<\/div>\n<div class=\"bg-spacesuit-white width-2px\"><\/div>\n<div class=\"grid-col flex-3 padding-top-4 padding-bottom-4\">\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><img decoding=\"async\" width=\"720\" height=\"650\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=720&#038;h=650&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-medium_large size-medium_large\" alt=\"The Elbe river in Germany into the North Sea on the left side of the image. At high tide, a handful of small islands and crescent-shaped sandbars remain exposed above the water level near shore. Ships are visible as small, bright specks on the water.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=720&#038;h=650&#038;fit=crop&#038;crop=faces%2Cfocalpoint 720w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=300&#038;h=271&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=400&#038;h=361&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511.jpg?w=600&#038;h=542&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">The ocean\u2019s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the German coast.<\/div>\n<div class=\"hds-credits\">NASA Earth Observatory\/Lauren Dauphin<\/div>\n<\/figcaption><\/div>\n<\/p>\n<\/div>\n<div class=\"curtain-view-label-wrapper curtain-view-before\">\n\t\t\t\t\t\t<span class=\"curtain-view-label\"><br \/>\n\t\t\t\t\t\t\tAugust 15, 2025\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n<div class=\"curtain-view-label-wrapper curtain-view-after\">\n\t\t\t\t\t\t<span class=\"curtain-view-label\"><br \/>\n\t\t\t\t\t\t\tMay 11, 2025\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n<p>\t\t\t<!-- Under image content --><\/p>\n<div class=\"grid-row flex-row title-row padding-x-2 desktop:padding-x-0 padding-top-2\">\n<div class=\"grid-col-12 tablet:grid-col-6\"><\/div>\n<div class=\"grid-col-12 tablet:grid-col-6 button-row margin-bottom-3 tablet:margin-bottom-0\">\n\t\t\t\t\t<!-- Update onClick handlers --><br \/>\n\t\t\t\t\t<button\n\t\t\t\t\t\taria-label=\"Curtain view\"\n\t\t\t\t\t\tclass=\"comparison-view curtain-view-button comparison-view-active padding-bottom-1 margin-left-1\"\n\t\t\t\t\t>Curtain<\/button><button\n\t\t\t\t\t\taria-label=\"Toggle view\"\n\t\t\t\t\t\tclass=\"comparison-view toggle-view-button padding-bottom-1 margin-left-1\"\n\t\t\t\t\t>Toggle<\/button><button\n\t\t\t\t\t\taria-label=\"Two-Up view\"\n\t\t\t\t\t\tclass=\"comparison-view two-up-view-button padding-bottom-1 margin-left-1\"\n\t\t\t\t\t>2-Up<\/button>\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n<p>\t\t<!-- Image detail area -->\n\t\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<p class=\"wp-block-paragraph\">One of the major rivers of Europe, the <a href=\"https:\/\/www.ebsco.com\/research-starters\/science\/elbe-river\" rel=\"noopener\">Elbe<\/a> flows more than 1,000 kilometers (600 miles) across the continent before reaching the <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/a-sea-of-color-and-wind-146556\/\" rel=\"noopener\">North Sea<\/a>. At its mouth, the low-lying landscape is continually reshaped by the rise and fall of the tides. These dynamic tidal flats are a boon to biodiversity while sometimes posing challenges for those navigating its waters and for communities living along its shores.<\/p>\n<p class=\"wp-block-paragraph\">The images above illustrate how the area changes with the tides. They were acquired on August 15, 2025, at low tide (left) and on May 11, 2025, at high tide (right) with the <a href=\"https:\/\/science.nasa.gov\/mission\/landsat\/oli\/\" rel=\"noopener\">OLI<\/a>\u00a0(Operational Land Imager) on\u00a0<a href=\"https:\/\/science.nasa.gov\/mission\/landsat-9\/\" rel=\"noopener\">Landsat 9<\/a>. The mean <a href=\"https:\/\/oceanservice.noaa.gov\/education\/tutorial_tides\/tides01_intro.html\" rel=\"noopener\">tidal range<\/a> at Cuxhaven is <a href=\"https:\/\/gezeiten.bsh.de\/cuxhaven_steubenhoeft\" rel=\"noopener\">2.9 meters<\/a> (9.5 feet), which is considered intermediate, or <a href=\"https:\/\/www.sepmstrata.org\/page.aspx?pageid=302\" rel=\"noopener\">mesotidal<\/a>. The tides are also <a href=\"https:\/\/northsearegion.eu\/immerse\/project-estuaries\/the-elbe-estuary\/index.html\" rel=\"noopener\">asymmetrical<\/a>, meaning the flood period is shorter than the ebb. This causes the incoming current to run faster and typically carry more sediment up the 140-kilometer-long (87-mile-long) estuary than it does out.<\/p>\n<p class=\"wp-block-paragraph\">The low tide exposes complex channels, sandbars, and mudflats around the river mouth. This wide zone of coastal wetlands is part of the <a href=\"https:\/\/whc.unesco.org\/en\/list\/1314\/\" rel=\"noopener\">Wadden Sea<\/a>, which stretches from the Netherlands to southern Denmark and represents the largest continuous system of intertidal sand and mud flats in the world. Its habitats serve as important staging, molting, and wintering grounds for migratory birds, with more than 10 million passing through every year.<\/p>\n<p class=\"wp-block-paragraph\">A channel cuts through these natural features near the river\u2019s mouth, allowing ships to reach Cuxhaven and Hamburg\u2014the <a href=\"https:\/\/www.porteconomics.eu\/top-15-europen-union-container-ports-in-2024\/\" rel=\"noopener\">third-largest<\/a> container port in the European Union\u2014farther upriver. Dredging is required to remove accumulated sediment in the channel, and <a href=\"https:\/\/www.hafen-hamburg.de\/en\/portofhamburg\/fairway-adjustment\/\" rel=\"noopener\">some ships<\/a> can only pass through when the tide is high enough. The Elbe\u2019s mouth also provides access to the <a href=\"https:\/\/www.gdws.wsv.bund.de\/SharedDocs\/Downloads\/DE\/Publikationen\/_GDWS\/Wasserstrassen\/NOK_englisch.pdf\" rel=\"noopener\">Kiel Canal<\/a>, which connects the North Sea and Baltic Sea and is the world\u2019s busiest human-made waterway navigable by seagoing ships.\u00a0<\/p>\n<div id=\"\" class=\"hds-media hds-module wp-block-image\">\n<div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\">\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><a href=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanyelbe_photo.jpg?w=720&#038;h=480&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" rel=\"noopener\"><img decoding=\"async\" width=\"720\" height=\"480\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanyelbe_photo.jpg?w=720&#038;h=480&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"A broad tidal mudflat fills the foreground of this photo.  A sliver of deeper water is visible on the horizon, where a cargo ship loaded with shipping containers and cranes appears to be traveling to the left.\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanyelbe_photo.jpg?w=720&#038;h=480&#038;fit=crop&#038;crop=faces%2Cfocalpoint 720w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanyelbe_photo.jpg?w=300&#038;h=200&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanyelbe_photo.jpg?w=400&#038;h=267&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanyelbe_photo.jpg?w=600&#038;h=400&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">A cargo ship passes by mudflats at the mouth of the Elbe.<\/div>\n<div class=\"hds-credits\"><a href=\"https:\/\/www.flickr.com\/photos\/gogoolplex\/3414569945\"  rel=\"noopener\">Thomas G\u00f6lles<\/a>, April 5, 2009.<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n<p class=\"wp-block-paragraph\">At high tide (right), only a handful of small islands and sandbars remain above the waves. One of these islands, <a href=\"https:\/\/www.hamburg-travel.com\/see-explore\/metropolitan-region\/neuwerk-island\/\" rel=\"noopener\">Neuwerk<\/a>, is a tranquil tourist destination that is home to a few dozen inhabitants and the oldest building on the German coast. A brick tower, completed in 1310 and later converted to a lighthouse, was built to protect shipping on the Elbe from pirates and <a href=\"https:\/\/www.historic-uk.com\/CultureUK\/Smugglers-Wreckers\/\" rel=\"noopener\">wreckers<\/a>.<\/p>\n<p class=\"wp-block-paragraph\">These images show normal tidal variation in the area, but storms can push water levels much higher than a typical high tide. The highest water level measured at Cuxhaven\u20145.1 meters (16.7 feet) above Europe\u2019s official <a href=\"https:\/\/www.atlasobscura.com\/places\/normaal-amsterdams-peil-amsterdam-ordenance-datum\" rel=\"noopener\">sea level reference<\/a>\u2014occurred on January 3, 1976, when a fast-moving storm swept across the North Sea and slammed the coast with high winds. Researchers who <a href=\"https:\/\/doi.org\/10.5194\/nhess-24-481-2024\" rel=\"noopener\">reconstructed historical storms<\/a> noted that the storm surge was worsened by its timing relative to the tide. The strongest winds arrived around low tide, preventing water that had propagated upstream at high tide from flowing back out to sea and causing further inundation inland.<\/p>\n<p class=\"wp-block-paragraph\">Scientists study past extreme events like this to better understand how future storms might affect low-lying coastal areas and how flood protection could be improved. Flooding risks can be <a href=\"https:\/\/www.mdpi.com\/2073-4441\/17\/13\/1889#:~:text=Only%20Cuxhaven%20in%20Germany%20has%20an%20elevated%20exposure%20in%20its%20urban%20morphological%20zone%2C%20ranging%20from%2055%25%20to%2080%25\" rel=\"noopener\">exacerbated<\/a> by rising sea levels, which at Cuxhaven have trended upward by <a href=\"https:\/\/tidesandcurrents.noaa.gov\/sltrends\/sltrends_station.shtml?id=140-012\" rel=\"noopener\">2.12 millimeters per year<\/a>, or 0.70 feet per century.<\/p>\n<p class=\"wp-block-paragraph\">Two new Earth-observing satellites are making it possible to measure water levels in coastal areas in greater detail. The dual-band radar on the <a href=\"https:\/\/science.nasa.gov\/mission\/nisar\/\" rel=\"noopener\">NISAR<\/a> (NASA-ISRO Synthetic Aperture Radar) satellite is expected to track long-term phenomena such as sea level changes, as well as to map <a href=\"https:\/\/doi.org\/10.3390\/rs17020263\" rel=\"noopener\">flood inundation<\/a> and other ephemeral events. In addition, early data from NASA\u2019s <a href=\"https:\/\/swot.jpl.nasa.gov\/\" rel=\"noopener\">SWOT<\/a> (Surface Water and Ocean Topography) satellite has demonstrated the potential to accurately <a href=\"https:\/\/doi.org\/10.1029\/2024EA004104\" rel=\"noopener\">measure water levels<\/a> around complex coastlines and to <a href=\"https:\/\/doi.org\/10.1029\/2024GL109983\" rel=\"noopener\">improve tidal models<\/a>.<\/p>\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p class=\"wp-block-paragraph\"><em>NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the\u00a0<\/em><a href=\"http:\/\/earthexplorer.usgs.gov\/\"  rel=\"noreferrer noopener\"><em>U.S. Geological Survey<\/em><\/a><em>.\u00a0<\/em><a href=\"https:\/\/www.flickr.com\/photos\/gogoolplex\/3414569945\"  rel=\"noreferrer noopener\"><em>Photo<\/em><\/a><em>\u00a0by Thomas G\u00f6lles.\u00a0Story by Lindsey Doermann.<\/em>\u00a0<\/p>\n<div id=\"\" class=\"hds-featured-file-list bg-spacesuit-white padding-x-2 tablet:padding-x-3 desktop:padding-x-4 padding-y-5 desktop:padding-y-6 hds-module align wp-block-nasa-blocks-file-list\">\n<div class=\"grid-container grid-container-block padding-0\">\n<div class=\"grid-row width-full margin-bottom-4\">\n<div class=\"grid-col-12 desktop:grid-col-6 margin-bottom-2 desktop:margin-bottom-0\">\n<h2 class=\"heading-22\">\n\t\t\t\t\tDownloads\t\t\t\t<\/h2>\n<\/p>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<div class=\"desktop:grid-col display-flex flex-align-center desktop:flex-justify-end\">\n\t\t\t\t\t\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"hds-list-row hds-file-list-row\">\n<div class=\"hds-list-thumbnail hds-file-list-thumbnail\">\n<div class=\"hds-list-thumbnail-inner hds-file-list-thumbnail-inner hds-cover-wrapper\">\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"8853\" height=\"8236\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=8853&#038;h=8236&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"The Elbe river in Germany into the North Sea on the left side of the image. Low tide exposes wide, light-colored tidal flats interrupted by branching channels of dark water.\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" data-video-loop=\"\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=8853&#038;h=8236&#038;fit=crop&#038;crop=faces%2Cfocalpoint 8853w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=300&#038;h=279&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=768&#038;h=714&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=1024&#038;h=953&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=1536&#038;h=1429&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=2048&#038;h=1905&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=400&#038;h=372&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=600&#038;h=558&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=900&#038;h=837&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=1200&#038;h=1116&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg?w=2000&#038;h=1861&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 8853px) 100vw, 8853px\" \/><\/figure>\n<\/div>\n<\/div>\n<div class=\"hds-list-details\">\n<div class=\"hds-list-name hds-file-list-name\">\n<h2 class=\"heading-22\">August 15, 2025<\/h2>\n<\/p>\n<\/div>\n<div class=\"hds-list-meta\">\n<div class=\"hds-list-meta-item hds-list-date hds-file-list-date\">\n<p class=\"p-sm\">\n<\/div>\n<div class=\"hds-list-meta-item hds-file-list-filetype\">\n<p class=\"p-sm\">JPEG (6.33 MB)<\/p>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"hds-list-cta hds-file-list-download\">\n\t\t\t\t\t<a aria-label=\"Download August 15, 2025\" href=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250815_lrg.jpg\"  download rel=\"noopener\"><br \/>\n\t\t\t\t\t\t<svg aria-hidden=\"true\" width=\"32\" height=\"32\" viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"16\" cy=\"16.0001\" r=\"16\" fill=\"#1C67E3\"\/><path d=\"M15.2357 8.00007L15.2357 16.4829L11.9504 13.4078L10.8801 14.4094L16.0001 19.2001L21.1201 14.4094L20.0499 13.4078L16.7645 16.4829L16.7645 8.00007L15.2357 8.00007Z\" fill=\"white\"\/><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M9.6 20.8001V18.4001H8V22.4001H24V18.4001H22.4V20.8001H9.6Z\" fill=\"white\"\/><\/svg><br \/>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<div class=\"hds-list-row hds-file-list-row\">\n<div class=\"hds-list-thumbnail hds-file-list-thumbnail\">\n<div class=\"hds-list-thumbnail-inner hds-file-list-thumbnail-inner hds-cover-wrapper\">\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"8853\" height=\"8236\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=8853&#038;h=8236&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"The Elbe river in Germany into the North Sea on the left side of the image. At high tide, a handful of small islands and crescent-shaped sandbars remain exposed above the water level near shore. Ships are visible as small, bright specks on the water.\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" data-video-loop=\"\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=8853&#038;h=8236&#038;fit=crop&#038;crop=faces%2Cfocalpoint 8853w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=300&#038;h=279&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=768&#038;h=714&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=1024&#038;h=953&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=1536&#038;h=1429&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=2048&#038;h=1905&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=400&#038;h=372&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=600&#038;h=558&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=900&#038;h=837&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=1200&#038;h=1116&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg?w=2000&#038;h=1861&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 8853px) 100vw, 8853px\" \/><\/figure>\n<\/div>\n<\/div>\n<div class=\"hds-list-details\">\n<div class=\"hds-list-name hds-file-list-name\">\n<h2 class=\"heading-22\">May 11, 2025<\/h2>\n<\/p>\n<\/div>\n<div class=\"hds-list-meta\">\n<div class=\"hds-list-meta-item hds-list-date hds-file-list-date\">\n<p class=\"p-sm\">\n<\/div>\n<div class=\"hds-list-meta-item hds-file-list-filetype\">\n<p class=\"p-sm\">JPEG (6.02 MB)<\/p>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"hds-list-cta hds-file-list-download\">\n\t\t\t\t\t<a aria-label=\"Download May 11, 2025\" href=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/esd\/eo\/images\/iotd\/2026\/how-the-tide-turns-at-the-mouth-of-the-elbe\/germanytide_oli2_20250511_lrg.jpg\"  download rel=\"noopener\"><br \/>\n\t\t\t\t\t\t<svg aria-hidden=\"true\" width=\"32\" height=\"32\" viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"16\" cy=\"16.0001\" r=\"16\" fill=\"#1C67E3\"\/><path d=\"M15.2357 8.00007L15.2357 16.4829L11.9504 13.4078L10.8801 14.4094L16.0001 19.2001L21.1201 14.4094L20.0499 13.4078L16.7645 16.4829L16.7645 8.00007L15.2357 8.00007Z\" fill=\"white\"\/><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M9.6 20.8001V18.4001H8V22.4001H24V18.4001H22.4V20.8001H9.6Z\" fill=\"white\"\/><\/svg><br \/>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"><strong>References\u00a0&#038; Resources<\/strong>\u00a0<\/h2>\n<ul class=\"wp-block-list\">\n<li>Common Wadden Sea Secretariat\u00a0<a href=\"https:\/\/www.waddensea-worldheritage.org\/\"  rel=\"noreferrer noopener\">Welcome to the Wadden Sea World Heritage<\/a>. Accessed August 5, 2026.\u00a0<\/li>\n<li>EBSCO Research Starters (2024)\u00a0<a href=\"https:\/\/www.ebsco.com\/research-starters\/science\/elbe-river\"  rel=\"noreferrer noopener\">Elbe River<\/a>. Accessed\u00a0August\u00a05, 2026.\u00a0<\/li>\n<li>Federal Maritime and Hydrographic Agency\u00a0(2025)\u00a0<a href=\"https:\/\/gezeiten.bsh.de\/\"  rel=\"noreferrer noopener\">Tides<\/a>. Accessed\u00a0August 5, 2026.\u00a0<\/li>\n<li>Meyer, E.M.I. and\u00a0Gaslikova, L. (2024)\u00a0<a href=\"https:\/\/doi.org\/10.5194\/nhess-24-481-2024\"  rel=\"noreferrer noopener\">Investigation of historical severe storms and storm tides in the German Bight with century reanalysis data<\/a>.\u00a0<em>Natural Hazards and Earth System Sciences<\/em>,\u00a024(2), 481\u2013499.\u00a0\u00a0<\/li>\n<li>NASA\u00a0<a href=\"https:\/\/science.nasa.gov\/moon\/tides\/\"  rel=\"noreferrer noopener\">Tides<\/a>. Accessed\u00a0August 5, 2026.\u00a0<\/li>\n<li>North Sea Region\u00a0Programme\u00a0<a href=\"https:\/\/northsearegion.eu\/immerse\/project-estuaries\/the-elbe-estuary\/index.html\"  rel=\"noreferrer noopener\">The Elbe Estuary<\/a>. Accessed\u00a0August 5, 2026.\u00a0<\/li>\n<\/ul>\n<div id=\"\" class=\"hds-content-lists-inner hds-module hds-module-full alignfull wp-block-nasa-blocks-content-lists\">\n<div id=\"content-list-dfdf917b-2866-4354-af4f-7f800547ce89\" class=\"hds-content-lists margin-y-3 padding-x-0 bg-spacesuit-white width-full maxw-full\" 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data-current-query=\"{\"block_id\":\"content-list-dfdf917b-2866-4354-af4f-7f800547ce89\",\"categories\":\"\",\"content_categories\":\"\",\"exclude_child_terms\":false,\"exclude_child_pages\":false,\"layout\":\"grid\",\"listing_page\":\"no\",\"listing_page_category_id\":2151,\"meta_fields\":[],\"news_tags\":\"\",\"number_of_items\":3,\"order\":\"DESC\",\"orderby\":\"date\",\"current_page\":1,\"requesting_id\":1209117,\"science_only\":false,\"search_query\":\"\",\"show_content_type_tags\":\"yes\",\"show_excerpts\":\"yes\",\"show_pagination\":true,\"show_publish_date\":\"no\",\"show_readtime\":\"yes\",\"show_thumbnails\":\"yes\",\"calendar_overflow_mode\":\"modal\",\"science_org\":\"\",\"content_science_orgs\":\"\",\"internal_terms\":\"\",\"mission_programs\":\"\",\"mission_status\":\"\",\"mission_target\":\"\",\"mission_type\":\"\",\"response_format\":\"html\",\"show_drafts\":false,\"related_content\":\"1257016,1228870,1210419,1228049,1259433,1229998,1213096,1226841,1213120,1257693\",\"use_content_term_filters\":false,\"filter_logic\":\"default\",\"post_types\":\"any\",\"base_terms\":\"{\"category\":\"\",\"science-org\":\"6478\",\"internal-terms\":\"\",\"news-tags\":\"\"}\"}\">\n<div class=\"grid-container grid-container-widescreen padding-x-3\">\n<div class=\"grid-row flex-align-start margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<h2 class=\"section-heading-sm line-height-sm\">You may also be interested in:<\/h2>\n<p class=\"margin-top-0 margin-bottom-2 maxh-tablet\">Stay up-to-date with the latest content from NASA as we explore the universe and discover more about our home planet.<\/p>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-container grid-container-block padding-0 margin-0 flex-justify-center\">\n<div class=\" grid-col-12\">\n<div class=\"grid-row grid-container grid-container-block padding-0\" style=\"display: block\">\n<div id=\"filter-tags\" class=\"grid-col-12 filter-tags-container\"><\/div>\n<\/p>\n<\/div>\n<div class=\"smd-orbit-loader\" role=\"status\" aria-hidden=\"true\">\n<div class=\"orbit-plane\"><span class=\"orbit-dot\"><\/span><\/div>\n<\/div>\n<div id=\"post-list-container\" class=\"hds-content-items hds-content-items-grid margin-top-2\" aria-live=\"polite\" data-rest-url=\"https:\/\/science.nasa.gov\/wp-json\/smd\/v1\/content-list\">\n<div class=\"hds-content-item content-list-item-post\">\n                    <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/a-tide-fueled-trove-of-biodiversity-in-guinea-bissau\/\" class=\"hds-content-item-thumbnail\" rel=\"noopener\"><\/p>\n<figure class=\"hds-media-background  content-list-thumbnail\"><img decoding=\"async\" loading=\"lazy\" width=\"300px\" height=\"300px\" data-no-id=\"true\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/a-tide-fueled-trove-of-biodiversity-in-guinea-bissau\/bijagosarchipelago_oli_20251128_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;w=300 300w\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/a-tide-fueled-trove-of-biodiversity-in-guinea-bissau\/bijagosarchipelago_oli_20251128_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;%23038;w=300\" ><\/figure>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-inner\">\n            <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/a-tide-fueled-trove-of-biodiversity-in-guinea-bissau\/\" class=\"hds-content-item-heading\" rel=\"noopener\"><\/p>\n<div class=\"hds-a11y-heading-22\">A Tide-Fueled Trove of Biodiversity in Guinea-Bissau<\/div>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-readtime label margin-bottom-1\">\n                    3 min read                <\/div>\n<p class=\"margin-top-0 margin-bottom-1\">The expansive mudflats, sandy beaches, and mangrove forests of the Bijag\u00f3s archipelago support an array of migratory shorebirds and large\u2026<\/p>\n<div class=\"display-flex flex-align-center label color-carbon-60 margin-bottom-auto\"><svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg><span>Article<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"hds-content-item content-list-item-post\">\n                    <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/signs-of-thaw-in-the-bering-sea\/\" class=\"hds-content-item-thumbnail\" rel=\"noopener\"><\/p>\n<figure class=\"hds-media-background  content-list-thumbnail\"><img decoding=\"async\" loading=\"lazy\" width=\"300px\" height=\"300px\" data-no-id=\"true\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/signs-of-thaw-in-the-bering-sea\/alaskanunivak_721_tmo_20260603_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;w=300 300w\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/signs-of-thaw-in-the-bering-sea\/alaskanunivak_721_tmo_20260603_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;%23038;w=300\" ><\/figure>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-inner\">\n            <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/signs-of-thaw-in-the-bering-sea\/\" class=\"hds-content-item-heading\" rel=\"noopener\"><\/p>\n<div class=\"hds-a11y-heading-22\">Signs of Thaw in the Bering Sea<\/div>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-readtime label margin-bottom-1\">\n                    3 min read                <\/div>\n<p class=\"margin-top-0 margin-bottom-1\">Drifting sea ice fragments near Alaska\u2019s Saint Lawrence and Nunivak islands and colorful water around the Yukon Delta heralded the\u2026<\/p>\n<div class=\"display-flex flex-align-center label color-carbon-60 margin-bottom-auto\"><svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg><span>Article<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"hds-content-item content-list-item-post\">\n                    <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/barents-sea-tied-to-low-arctic-sea-ice\/\" class=\"hds-content-item-thumbnail\" rel=\"noopener\"><\/p>\n<figure class=\"hds-media-background  content-list-thumbnail\"><img decoding=\"async\" loading=\"lazy\" width=\"300px\" height=\"300px\" data-no-id=\"true\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/barents-sea-tied-to-low-arctic-sea-ice\/barentsice_tmo_20260317_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;w=300 300w\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/barents-sea-tied-to-low-arctic-sea-ice\/barentsice_tmo_20260317_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;%23038;w=300\" ><\/figure>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-inner\">\n            <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/barents-sea-tied-to-low-arctic-sea-ice\/\" class=\"hds-content-item-heading\" rel=\"noopener\"><\/p>\n<div class=\"hds-a11y-heading-22\">Barents Sea Tied to Low Arctic Sea Ice<\/div>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-readtime label margin-bottom-1\">\n                    4 min read                <\/div>\n<p class=\"margin-top-0 margin-bottom-1\">Patches of open water in the region contributed to low sea ice extent across the Arctic in March 2026, which\u2026<\/p>\n<div class=\"display-flex flex-align-center label color-carbon-60 margin-bottom-auto\"><svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg><span>Article<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"pagination-container\" class=\"pagination\">\n<nav class=\"hds-pagination hds-pagination--content-lists\" role=\"navigation\" aria-label=\"Pagination Navigation\" data-mid-size=\"2\" data-end-size=\"1\" data-max-pages=\"4\" >\n<span aria-current=\"page\" class=\"page-numbers current\" aria-label=\"Current Page, Page 1\" aria-current=\"true\" data-page-number=\"1\"><br \/>\n<span>1<\/span><\/span><br \/>\n<a class=\"page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/how-the-tide-turns-at-the-mouth-of-the-elbe\/#\" aria-label=\"Goto Page 2\" data-page-number=\"2\"><br \/>\n<span>2<\/span><\/a><br \/>\n<a class=\"page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/how-the-tide-turns-at-the-mouth-of-the-elbe\/#\" aria-label=\"Goto Page 3\" data-page-number=\"3\"><br \/>\n<span>3<\/span><\/a><br \/>\n<a class=\"page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/how-the-tide-turns-at-the-mouth-of-the-elbe\/#\" aria-label=\"Goto Page 4\" data-page-number=\"4\"><br \/>\n<span>4<\/span><\/a><br \/>\n<a class=\"next page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/how-the-tide-turns-at-the-mouth-of-the-elbe\/#\" 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class=\"hds-media-background  \"><img decoding=\"async\" width=\"585\" height=\"425\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=585&#038;h=425&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=585&#038;h=425&#038;fit=crop&#038;crop=faces%2Cfocalpoint 585w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=300&#038;h=218&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=400&#038;h=291&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w\" sizes=\"auto, (max-width: 585px) 100vw, 585px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/image-of-the-day\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Earth Observatory Image of the Day<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">NASA&#8217;s Earth Observatory brings you the Earth, every day, with in-depth stories and stunning imagery.<\/p>\n<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"2500\" height=\"1407\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2500&#038;h=1407&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2500&#038;h=1407&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2500w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=300&#038;h=169&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=768&#038;h=432&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=1024&#038;h=576&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=1536&#038;h=864&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2048&#038;h=1153&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=400&#038;h=225&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=600&#038;h=338&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=900&#038;h=507&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=1200&#038;h=675&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2000&#038;h=1126&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 2500px) 100vw, 2500px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/earth\/explore\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Explore Earth Science<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"1920\" height=\"1920\" src=\"https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1920&#038;h=1920&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1920&#038;h=1920&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1920w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=150&#038;h=150&#038;fit=crop&#038;crop=faces%2Cfocalpoint 150w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=300&#038;h=300&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=768&#038;h=768&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1024&#038;h=1024&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1536&#038;h=1536&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=50&#038;h=50&#038;fit=crop&#038;crop=faces%2Cfocalpoint 50w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=100&#038;h=100&#038;fit=crop&#038;crop=faces%2Cfocalpoint 100w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=200&#038;h=200&#038;fit=crop&#038;crop=faces%2Cfocalpoint 200w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=400&#038;h=400&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=600&#038;h=600&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=900&#038;h=900&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1200&#038;h=1200&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/earth\/data\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Earth Science Data<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Open access to NASA\u2019s archive of Earth science data<\/p>\n<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"1536\" height=\"768\" src=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?w=1536\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png 3600w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=300,150 300w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=768,384 768w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=1024,512 1024w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=1536,768 1536w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=2048,1024 2048w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=400,200 400w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=600,300 600w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=900,450 900w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=1200,600 1200w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=2000,1000 2000w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The ocean\u2019s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the coast of Germany.<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[16994,17053,19151,15645,19152],"tags":[],"class_list":["post-500209","post","type-post","status-publish","format-standard","hentry","category-earth-observatory","category-human-dimensions","category-landsat-9","category-oceans","category-topography"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"The ocean\u2019s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the coast of Germany.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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