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Hawaiian monk seal comes ashore
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Red Listed: Study Finds One-Fifth of World's Vertebrates Are at Risk

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A bull shark's ability to prey on many different species is helped by its capacity to survive in both freshwater and saltwater.
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Swinging for Bull Sharks

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A walrus sits on top of ice.
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One Hundred Names for Sea Ice

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Many species of pink coralline algae, which cements coral reefs together, cover a reef surface in the Southern Line Islands.
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Pink Coralline Algae

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This magnified photo provides a close-up look at copepods—tiny crustaceans that right whales feed on.
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Copepods: Right Whale Food

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Yankee Whalers: An 1856 Currier & Ives print shows whalers harpooning a right whale.
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The “Right” Whale to Hunt

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An American crocodile rests on a bed of seagrass.
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American Crocodile

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A graph compares the crustacean biodiversity of coral reefs around the world.
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Coral Reef Biodiversity: A Comparison

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Relatively slow moving, juvenile plane-head filefish Monacanthus hispidus (Monacanthidae) travel along with the algae. They pick off and eat small animals as they move around in the rotating sargassum ball. Adult filefish only grow to be about 11
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Juvenile plane-head filefish

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The mauve stinger is a glowing jellyfish.
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Glowing Mauve

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There are many techniques used to sample the benthic zone.
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Benthic Diving Techniques

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A thresher shark uses its unusual tail fin for swimming and hunting.
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The Thrashing Thresher Shark

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