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This purple urchin Paleopneustes cristatus is seldom seen by itself, and can be found in groups of hundreds.
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Purple Sea Urchin

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Polar bears have evolved to survive in the Arctic.
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Polar Bear on the Ice

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It took a while for scientists to identify what made this spiral track.
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Spiral Track on Ocean Floor

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A Galapagos tortoise munches on some greens.
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Galapagos Tortoise

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Nuclear bomb in Bikini Atoll
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Nuclear Bombs on the Coral Reef

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A red and white colored bristle worm swims in the water column.
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A Striped Deep Sea Worm

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Tropical hatchetfish, like the one shown in this X-ray photograph, live in the dark depths of the ocean. Like many other deep-sea fishes, they have large eyes and bioluminescent spots on their bellies.
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X-Ray Image of a Tropical Hatchetfish

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Hurricanes hurt humans and marine life.
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Hurricanes and Marine Life

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The weedy sea dragon male can hold around 250 eggs in his pouch.
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The Dragon of the Sea

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Two Adélie penguins face each other while lying on ice.
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Adélie Penguins Face Off

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“The male weedy seadragon is entrusted with the pink, fertilized eggs once mating has been completed. It is his task to incubate them until their hatching, approximately eight weeks later. The day this photo was taken, the weather and conditions were unu
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Weedy Seadragon, Flinders pier, Flinders, Victoria, Australia

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A longshoreman standing in front of a large pile of oyster shells on waterfront pier in Atlantic City in 1910.
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Counting Mountains of Oysters

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