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Join marine biologist Greg Skomal and meteorologist Joe Merchant as they test Joe's theory of how shark attacks can be as predictable as the weather. (National Geographic)
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Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel
Photo © National Geographic Channel