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Hawaiian monk seals are among the wildlife found within the Papahānaumokuākea World Heritage Site.
Slideshow

Endangered Ocean Animals

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A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.
Slideshow

A Collection of Cambrian Fossils

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Henry the Fish is made completely out of colorful plastic that washed up on Oregon beaches.
Slideshow

Washed Ashore: From Beach Trash to Ocean Art

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Two sea lions interact amongst schools of small fish.
Slideshow

Seal and Sea Lion Pictures

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A wildlife biologist surveys oiled algae
Article

Breaking Down the Myths and Misconceptions About the Gulf Oil Spill

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Pearl oysters create pearls when a hard particle is coated with calcium carbonate (nacre) after entering the oyster.
Photo

Pearls of Wisdom

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Three bar jacks and a female tiger shark swim through the ocean off the coast of the Bahamas.
Photo

Tiger Shark

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An artist sketches the preserved bones of a specimen in the Smithsonian's collection.
Photo

Flippers, Jawbones, and Blowholes: Marine Specimens Inspire Artists

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A hawksbill turtle in the waters of the Seychelles.
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Aldabra Atoll, Seychelles

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A scientist collects oil-laden "sand patties" on a Louisiana beach two years after the oil spill.
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Scientist Collects Oil on the Gulf Coast

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