PHOTOS: Sharks Swim Towards Extinction

Study finds three shark species to be on the brink of extinction.

PHOTOS: Sharks Threatened by Fin Soup

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Sharks are sought the world over for food. In Australia and Asia, their fins are considered delicacies. As a result, environmentalists say, the animals are in danger of being overfished. This is a gray reef shark in the Bahamas. (Courtesy Rob Stewart/Sharkwater)
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