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Gerardia, or gold coral, species often have a tree-like shape, as evident in this specimen.
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Gold Coral

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Two octopuses sitting underwater highlight the different textures the animals can take on.
Overview

Octopuses, Squids, and Relatives

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Aegina, a type of jellyfish, swims through the water.
Slideshow

A Look at Life in the Deep Sea

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This tentacle was left behind by the first giant squid caught on film.
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Squid Tentacle

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A decomposing sea star loses its grip on a rock.
Article

Sickly Starfish: A Q&A with Dr. Chris Mah

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A reddish-orange nudibranch.
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A Baltic Sea Nudibranch

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Up close look at thin tentacles of a jellyfish.
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Jellyfish Tentacles Close Up

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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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The squidworm has 10 tentacle-like appendages on its head.
Photo

The Squidworm - A New Species

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This giant squid washed up on a beach in Norway around 1950.
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Giant Squid on Beach

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Image of two white sea shells with spirals.
Audio

Sanibel Island Shells: One Species at a Time

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Japanese scientists videotaped this female giant squid, alive, at the water's surface
Overview

Giant Squid

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