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![This recently discovered hairy crab species (Kiwa hirsuta) has no eyes.](/sites/default/files/styles/3_2_small/public/2023-11/image001-full_1.jpg.webp?itok=Igx7JQV9)
overview
The Census of Marine Life
Did you know that over 17,000 species thrive in the deep sea where no light......![Looking through this iceberg's reflection in the Antarctic water, you can see the iceberg below the surface—some 90% of its total volume.](/sites/default/files/styles/3_2_small/public/2023-11/iceberg.jpg.webp?itok=ETprs4Vs)
overview
The Arctic and The Antarctic
Travel to the ends of the earth—literally—and discover the polar ocean basins.......![A shell placed in seawater with increased acidity slowly dissolves over 45 days.](/sites/default/files/styles/3_2_small/public/2023-11/PMEL_Feely_dissolving-shells_main_1.jpg.webp?itok=X5Vs7NSf)
overview
Ocean Acidification
Ocean acidification is sometimes called “climate change’s equally evil twin,”......![Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat.](/sites/default/files/styles/3_2_small/public/2023-11/ChristofferBostrom_Zosteramarina_Finland.jpg.webp?itok=m0-RKki4)
overview
Seagrass and Seagrass Beds
Seagrasses are found in shallow salty and brackish waters in many parts of the......![A deep sea crab (Rochinia crassa) poses with sea fan (Callogorgia spp.) and coral (Lophelia pertusa) on large carbonate boulder.](/sites/default/files/styles/3_2_small/public/2023-11/sea_fan_and_coral.jpg.webp?itok=FXPNynTR)
slideshow
Oil Invades Coral Communities of the Deep
On the deep seafloor of the Gulf of Mexico, ecosystems made up of fish, corals,...![Mangrove roots provide an underwater habitat for many marine species.](/sites/default/files/styles/3_2_small/public/2023-11/Mangroves_in_Puerto_Rico.jpg.webp?itok=BEVwMBUg)
slideshow
Mangroves: Photos of Plants and Animals
Mangrove is the name for a tree—and also for a complex ecosystem—that bridges......![Chrysaora melanaster is a jellyfish found in the Arctic.](/sites/default/files/styles/3_2_small/public/2023-11/Chrysaora_melanaster.jpg.webp?itok=Elat8aoy)
overview