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In some reefs, small fishes such as this broad-barred goby protect corals by eating invading seaweeds.
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Coral Goby Cleans Coral

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The squidworm has 10 tentacle-like appendages on its head.
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The Squidworm - A New Species

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The Smithsonian's Dr. Carole Baldwin uses a wall diagram that shows genetic lineages among Starksia blennies (a type of reef fish) to explain how the seven new species differ from previously known species.
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Wall Chart of New Fish Species

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Students pose in front of an aquarium tank with fish.
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South Carolina Delegation

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Students studying climate change pose for a photo against a wall.
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National Aquarium Delegation

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Millions of sharks are caught each year for their dorsal fins, which are prized for shark fin soup. Top predators like sharks are important to maintaining biodiversity, and their removal can have ripple effects through an ecosystem.
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Finned Sharks in South Africa

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A shell placed in seawater with increased acidity slowly dissolves over 45 days.
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Shell Dissolves in Seawater

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A geneticist samples shark DNA
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Dr. Mahmood Shivji

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Photograph of a transparent comb jelly against a dark sea.
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Bioluminescent Comb Jelly

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This new species of squid (Magnapinna sp.) was discovered in 1954 in the stomach of a lancetfish.
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Bigfin Squid Specimen

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Oil burns during a controlled fire May 6, 2010 in the Gulf of Mexico.
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Deepwater Horizon Oil Spill Burn

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Scientists document a direct relationship between Arctic sea ice and polar bear survival.
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Forecast for Polar Bear Populations

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