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  • Ahh.. whale watching a relaxing activity
  • Yeah.. but how scary would it be if the whales just jumped up and could walk! 
  • Well Timothy, whales could walk 49 million years ago! They were land dwellers
  • Pshh.. you're lying. Whales are mammals, yes. But they are most definitely sea creatures and they always have been. 
  • Ugh. Here we go. 
  • Around 49 million years ago, whales’ mammal ancestors began their journey towards an aquatic lifestyle! These ancestors were called Indohyus and they were like the size of a deer.
  • Indohyus had unusually thick bones in its legs, which would have made it less buoyant and better able to walk on river or lake bottoms, as hippos do.
  • Hold up.. How do we know this is true? What evidence is there that it was actually a whale?
  • Well, when the palaeontologists unwrapped the lower jaw. They expected to see these low molars, like in elephants and sea cows, but they were these high teeth. Suddenly it hit them “Oh, this is a whale” they thought.
  • Hmm.. how do they look so different now?
  • Well, forelimbs and hind legs developed into flippers and flukes that allow whales to move through the water quickly in an effortless manner. A dorsal fin developed on the back of some species in order to provide them with better stabilization when swimming through the water.
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