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Giant shark megalodon was the most powerful superpredator ever. Why did it go extinct?

  • Written by John Long, Strategic Professor in Palaeontology, Flinders University
Giant shark megalodon was the most powerful superpredator ever. Why did it go extinct?Julius Csotonyi/Hachette

Imagine the seas off Peru, 6 million years ago. A group of long-nosed dolphins swam through the warm seawater, breaking the surface with occasional enthusiastic leaps into the stark sunshine, then diving crisply back into the clear water to join their compadres.

Not far away, a pod of small baleen whales headed southward to...

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