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Imagine that you are a Great White Shark and that you are transported back to the Miocene and Pliocene epochs of some 60 million years ago. Not being short on confidence and unaware of the level of competition in your new surroundings, you assume that the balance of power will not be radically disturbed and that you will continue to boss the oceans. Any pretenders to your throne will be quickly dispatched and you will carry on eating as much as you can get as the good life endures. [details]
