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grains of sand collected from Orient Point, Long Island, NY
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Sand from Orient Point, Long Island, New York

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10 grains of star shaped sand collected from southern Japan
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Star Sand Grains Collected from Southern Japan

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A skeleton of an ichthyosaur
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An Ichthyosaur's Bones

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Nancy standing by the ocean
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Nancy Knowlton by the Ocean

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Neighborhood Seafood Market in Rome, Italy
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Neighborhood Seafood Market in Rome

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Eugenie Clark collecting specimens on a dive.
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Eugenie Clark Diving

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Nancy Knowlton giving a lecture
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2011 Student Summit on the Ocean & Coasts Webcast, Part 1

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An underwater photo of Southern Bluefin Tuna swimming above a fish farm net.
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Tunas and Marlins Officially Classified as Threatened

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The Amazon River carries all the rainwater that lands in the Amazon rainforest, covering some 2.1 million square miles, into the ocean. And with it, it carries vital nutrients like phosphorus, nitrogen and silicon.
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Where the Amazon Meets the Ocean

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Squid expert Dr. Clyde Roper examines specimens stored in jars in the Smithsonian collection.
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Dr. Clyde Roper

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Photograph of a bristly brown and white worm, with one end pressed against a pale green coral.
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Fireworm Takes on Fire Coral

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A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States.
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Coral Reef Lobster and Fish

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