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Photograph of a bristly brown and white worm, with one end pressed against a pale green coral.
Photo

Fireworm Takes on Fire Coral

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White growth emerges from a deep-sea coral sample stained pink to enable ocean scientists to measure its growth rate.
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Growth Experiment

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The giant squid’s enormous eyes help it find prey in the dark ocean depths.
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Largest Eye in the World, Giant Squid

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Giant squid have eight arms but use their two long feeding tentacles to seize prey.
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Giant Squid Anatomy

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A mangrove tree crab clings to a leaf near a Smithsonian marine laboratory in Panama.
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Mangrove Tree Crab

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Mantis shrimp have built-in polarized vision to help them see underwater—and maybe even communicate.
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Built-in Underwater Polarized Lenses?

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A reddish-orange nudibranch.
Slideshow

A Collage of Nudibranch Colors

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Hawaiian monk seals are among the wildlife found within the Papahānaumokuākea World Heritage Site.
Slideshow

Endangered Ocean Animals

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Image of deep-sea crustacean with black background.
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Vibilia

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This tentacle belongs to a blue button. While it has a central “float” with streaming tentacles like typical jellyfish, the blue button is a colony of many small hydroid animals.
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Blue Button Tentacle

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A brittle star clings to the branches of a deep sea coral
Article

A Brittle Star May Be a Coral’s Best Friend

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A small giant clam -- yes, that's it's real name -- in Australia's Great Barrier Reef.
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Great Barrier Reef, Australia

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