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![Japanese scientists videotaped this female giant squid, alive, at the water's surface](/sites/default/files/styles/3_2_small/public/2023-11/Photo-3-full_0.jpg.webp?itok=7XJQo0PB)
overview
Giant Squid
Giant squid live up to their name: the largest giant squid ever recorded by......![A photo of a squid using bioluminescence to hide in the deep sea.](/sites/default/files/styles/3_2_small/public/2023-11/2_09_P08_G10_Abraliabigger.jpg.webp?itok=-_l8Wwm4)
overview
Bioluminescence
You may have seen the sparkle of fireflies on a summer’s night. The fireflies......![Photograph of the underside of a gelatinous octopus with a bright yellow bioluminescent ring around her mouth.](/sites/default/files/styles/3_2_small/public/2023-11/2_09-P-08-G-01-full_1.jpg.webp?itok=01D05kh_)
slideshow
Bioluminescent Animals Photo Gallery
Bioluminescence is one of the more captivating adaptations that have evolved in......![An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.](/sites/default/files/styles/3_2_small/public/2023-11/603_P01_G02w.jpg.webp?itok=tvuatrq3)
slideshow
The Ocean Throughout Geologic Time, An Image Gallery
Evidence shows that life probably began in the ocean at least 3.5 billion years......![This aptly named fish has two long fangs.](/sites/default/files/styles/3_2_small/public/2023-11/Anoplogaster-cornuta5-full_1.jpg.webp?itok=slwSK8OE)
slideshow
Creepy Critters: Marine Life Surfaces for Halloween
Claws, spines, spikes, tentacles, and fangs. Aliens, monsters, and ghostly......![This new species of lobster (Dinochelus ausubeli) is blind and has bizarre claws. It was discovered about 300 meters (984 feet) deep in the Philippine Sea by a Census of Marine Life expedition.](/sites/default/files/styles/3_2_small/public/2023-11/lobstergrab_full_0.jpg.webp?itok=4koJ_nDP)
slideshow
Deep Ocean Diversity Slideshow
Deep sea animals have to live in a very cold, dark, and high-pressure environment......![A reddish-orange nudibranch. A reddish-orange nudibranch.](/sites/default/files/styles/3_2_small/public/2023-11/5887255127_bf3e8b4f18_b.jpg.webp?itok=JQKxm79r)
slideshow
A Collage of Nudibranch Colors
Nudibranchs are a kind of sea slug, and their 3000 species are found from the...![Small red hyperiid.](/sites/default/files/styles/3_2_small/public/2023-11/LanceolaD410T-006.jpeg.webp?itok=LpT9zxlE)
slideshow
The Hyper Eyes of Hyperiids: How Some Shrimp-Like Creatures See Light in the Deep Sea
Hyperiid amphipods are small crustaceans related to sand fleas and distantly......![A team of scientists explore the Arctic ocean.](/sites/default/files/styles/3_2_small/public/2023-11/Ice_Calvert.jpg.webp?itok=JWRYZqd-)
slideshow
Under Arctic Ice
Hidden beneath Arctic ice is a world few have ever seen. Take the icy plunge with...![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......![Coral scientist Dr. Amy Baco-Taylor observed corals like these on her first submarine dive to a deep-sea coral bed off the coast of Hawaii.](/sites/default/files/styles/3_2_small/public/2023-11/deep_sea_coral_community_full.jpg.webp?itok=iVxQ0pym)
overview
Deep-sea Corals
It may be the last place you’d expect to find corals—up to 6,000 m (20,000 ft)......![Bubbles of methane gas rise through a mussel bed in the Gulf of Mexico.](/sites/default/files/styles/3_2_small/public/2023-11/9660913415_248c220abc_h.jpg.webp?itok=S2-B9Yyw)
Photo