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NOVA: Why Sharks Attack

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Why are they appearing in areas where they've rarely been seen before? Are deadly encounters with tourists inevitable? Experts in Australia and the U.S. study the great white's hunting instincts in order to help prevent future attacks. (Also Fri. 5/9 at 3AM; Sun. 5/11 at 1PM)

Aired: 05/07/14 | Expired: 05/07/14 | Rating: NR

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