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A crab with numerous
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Decorator Crab

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This nudibranch is making a comeback to a location it hasn't been to in years along the California coast. First discovered off the coast of Southern California in 1902, Felimare californiensis was thought to be extinct in the region sin
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The Comeback Sea Slug

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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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A nudibranch showing a closeup of their fleshy, tentacle-like growths, called cerata.
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Aeolid Nudibranch Defense

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Photograph of a many-armed sea star with maroon and white feathery-looking arms, with a deep red sea fan in the background.
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Feather Star

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Like other cephalopods, the common cuttlefish (Sepia officials Linnaeus, 1758) possesses serious brain power.
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Common cuttlefish

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The staghorn coral is listed as Threatened under the U.S. Endangered Species Act. It is one of 22 coral species listed.
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Staghorn Coral

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Juvenile Clam with Tentacles
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Spaceship Mollusk

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A shell placed in seawater with increased acidity slowly dissolves over 45 days.
Overview

Ocean Acidification

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A bloom of moon jellies.
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A Bloom of Moon Jellies

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This magnified photo provides a close-up look at copepods—tiny crustaceans that right whales feed on.
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Copepods: Right Whale Food

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an oyster reef at low tide
Article

Oysters as a Keystone Species in the Chesapeake Bay

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