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54-60 Million Years ago between the Eocene and Myocene a relative of today's Hippopotamus took permanently to water and evolved into the Whale. Recent DNA analysis of both animals has caused a rethink on the origins of cetaceans. Today Hippo's are losing their body hair and spending virtually all their life in water. Their eyes have migrated to the top of their head and they appear to be slowly evolving into a marine mammal as did the whale did all those years ago.

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15y ago

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