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A harp seal in icy water
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Harp Seal

Harp seals depend on seasonal ice during the breeding season. Their populations may...
A school of Atlantic bluefin tuna
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Atlantic Bluefin Tuna

 Endangered Atlantic bluefin tuna are caught in the wild and fattened in pens for...
A translucent pteropod swims freely in the open ocean with a black background.
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Shelled Pteropod

 Changes in ocean chemistry destroy the shelled pteropods that this “naked sea...
Phoenix Islands protected area
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Phoenix Islands

 Unlike most coral reefs, those of the Phoenix Islands are protected from pollution...
A shimmering bobtail squid.
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Bobtail Squid Shimmers

 Within hours of birth, the Hawaiian bobtail squid attracts bioluminescent bacteria,...
The mauve stinger is a glowing jellyfish.
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Glowing Mauve

 The mauve stinger’s (Pelagia noctiluca) name in German means “night light,”...
A blue shark, with a copepod attached to its dorsal fin, coasts through waters near New England.
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Blue Shark

Named for the radiant blue color on its back and sides, the blue shark (Prionace...