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In order to tackle prey as large as whales, megalodon had to be able to open its mouth wide. It’s estimated that its jaw would span 2.7 by 3.4 metres wide. That’s easily big enough to swallow two ...

Roaming the ancient seas eons ago, the megalodon shark eviscerated its prey with jaws that were 10 feet wide. Warpaintcobra/iStock via Getty Images Plus ...