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A large tiger shark swims above a thresher shark, epaulette shark, and zebra shark in the open ocean
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Shark Tail Fins Tell a Story

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Freshly cut dorsal fin from a scalloped hammerhead shark held by fisherman with knife.
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Sharks Threatened by Finning

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A shark tooth embedded in a bone
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What the Megalodon Left Behind

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A Cardinalfish with eggs
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Brooding Cardinalfish

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A mother and calf humpback whale swim side-by-side.
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Mother and Calf

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a crab next to a coral den
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Crabs Make Coral Castles

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When seen from below a white belly better blends in with light-filled surface waters while from above a black back looks similar to the dark hues of the deep ocean.
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Galapagos Penguin from Above

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A juvenile lionfish during a night dive in Roatan, Honduras.
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Invading the Atlantic

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A tornado of sardines swirls around diver and photographer Erwin Poliakoff in the Philippines.
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Inside a Sardine Tornado

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On coral reefs fish are important links in the food chain that sustains higher-order predators (including humans) and keeps everything in balance.
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Black Axil Chromis on a Coral Reef

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A zoomed-in image of the crown-of-thorns sea star.
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Acanthaster planci

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