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Perhaps this year will have the chance to go on vacation and dip your body in the sea. Probably the greatest danger that you face will be a medusa lost or having to keep the safety distance with its neighbors of beach. But if you could make that same gesture a few hundreds of millions of years, perhaps would have to face a danger worthy of a nightmare: what’s a scorpion water of 2.5 meters, as long as a lion?

This is the scenario represented by Russell D. C. Bicknell and Patrick M. Smith, researchers from the University of New England and the Australian Museum, respectively, in a recently published article in “The Conversation”. The