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Ghost shark swimming
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Ghost Shark

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A crab with numerous
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Decorator Crab

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Where the pH is the lowest, corals can no longer grow - sand, rubble and seagrasses replace the reef.
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Lonely Seagrass in Acidic Waters

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An environmental chemist collects samples of oil in the Gulf of Mexico from the Deepwater Horizon spill. The resulting chemical “fingerprint” of the oil will help determine the origin of other samples.
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Oil Samples in the Gulf

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

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A screenshot of some of Smithsonian's marine story windows in Google Earth
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Smithsonian Marine Collections on Google Earth

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A marine iguana looks off in the distance.
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Marine Iguanas: One Species at a Time

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Swimmers brave the waters in the shadow of a coal-fired power plant. Coal plants like this one emit CO2 into our atmosphere which is warming the planet and altering the chemistry of the ocean.
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Coal plant

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Extreme close-up of great white shark skin denticles.
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Biomimicry Shark Denticles

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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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