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A brown-colored deep-sea coral sits on the deep ocean floor and is covered with brown oil floc.
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Anemone On Deep Sea Coral

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A purple jellyfish
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Stinging Beauty

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A close-up photo of dead man's fingers (Alcyonium digitatum), living in the Baltic Sea.
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Dead Man’s Fingers

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Shown here are several deep-sea coral species: From left to right are an unidentified purple octocoral, a small gold acanthorgorgiid octocoral, and a large colony of pink Corallium secundum
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Diverse Deep-Sea Corals

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Scientists discovered this 1.5-m (5-ft) tall yellow bamboo coral in 2007 off the coast of Hawaii in 1,459 m (4,787 ft) of water.
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New Bamboo Coral Discovery

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This black coral is more than 4,200 years old. Named for the color of their skeletons, black corals come in many colors.
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How old is black coral?

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Photo of coral polyp, with a single bleach polyp.
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Corals Threatened by Acid Seas

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This rare staurozoan, or stalked jellyfish, Haliclystus californiensis, is about 2 centimeters in length and was collected off the coast of California.
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Staurozoan: The Stalked Jellyfish

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Flame shells live in enormous colonies, but hidden in nests.
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Orange-Tentacled Flame Shell

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How Many Nights of Hanukkah? A harp has its own place in holiday music, but we also think this sponge looks like a super-sized menorah! This newly-discovered carnivorous sponge (Chondrocladia lyra) was found using robotic submersibles operated by the
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Harp Sponge

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A small, transparent, shell-less sea snail in the open ocean.
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A Chorus of Sea Angels

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A big-bellied seahorse
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A Foot-Long Seahorse

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