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A Mesozoic Ocean scene
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Ocean Through Time

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An illustration of the megalodon shark.
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The Megalodon

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A sea turtle swimming
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Sea Turtles

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an adult and baby coelacanth specimens on display
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Coelacanth

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A harp seal in icy water
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Seals, Sea Lions, and Walruses

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The sea star Odontaster validus and sea urchin Sterechinus neumayeri are often found living in association with one another along the Antarctic coastline, here during the Census of Marine Life.
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Sea Stars, Urchins, and Relatives

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a close up of bacteria
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Marine Microbes

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two humpback whales swim underwater
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Whales and Dolphins

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Waves breaking on the shore
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Currents, Waves, and Tides

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Chrysaora melanaster is a jellyfish found in the Arctic.
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Jellyfish and Comb Jellies

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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.
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Scientists Catalog Life on the Island of Moorea

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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
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Corals and Coral Reefs

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