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Prehistoric Predators: Monster Shark

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Prehistoric Predators: Monster Shark
It was the biggest predator ever to swim the oceans, and for 20 million years, this ferocious 50-ton shark with a 9-foot jaw and 7-inch serrated teeth, known as Megalodon, terrorized the creatures of the seas. Now, nearly 2 million years after its extinction, a team of scientists, including marine biologist Ryan Johnson, is combining research on the great white, the closest living relative to Megalodon, with the only fossils ever found — a few backbone fragments and its legendary teeth — to unl

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