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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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A snailfish, with brown and white stripes.
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A Snailfish Swimming in the Baltic Sea

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A photo of Oceana's ice class research vessel, the Hanse Explorer, on the Baltic Sea.
Slideshow

Biodiversity in the Baltic Sea

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On Moorea, an island in French Polynesia, researchers are striving to complete a biocode—a DNA catalog of every life form big enough to pick up with tweezers.
Overview

Scientists Catalog Life on the Island of Moorea

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The Japanese spider crab may be big but it is not invincible.
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Japanese Spider Crab

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It's a pygmy seahorse (Hippocampus bargibanti), found in Indonesia's biodiverse Coral Triangle and one of the smallest seahorse species in the world! They can change colors like a chameleon to blend into their environment. This helps to protect them from p
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Can You Spot the Seahorse?

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A photo of zebra mussels clinging together, the mollusks have successfully invaded brackish and freshwater areas across North America.
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Zebra Mussels (Dreissena polymorpha)

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An albatross soars over the ocean.
Article

Is It Love? Why Some Ocean Animals (Sort Of) Mate For Life

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Octocorals dominated the seafloor on Chris Mah's Okeanos mission to Johnston Atoll in the remote Pacific Ocean.
Article

Deep-sea octocorals: An ecosystem of their own

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an oyster reef at low tide
Article

Oysters as a Keystone Species in the Chesapeake Bay

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A small, transparent, shell-less sea snail in the open ocean.
Article

Angels of the Sea

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Dr. Clyde Roper (rear) and museum specialist Mike Sweeny examine a giant squid specimen.
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Studying Giant Squid

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