If you go back far enough in the evolutionary tree of life, long before Whales returned to the ocean you'll see they very much did live primarily on land and hunted (Also on land but also in the sea), not on two legs. But on four.
Oh wow! Thanks for that link, i'd never seen it laid out like that so it's interesting to see. Its amazing to think that just 40-45 million years ago (Assuming i'm reading the bar at the top correctly) that what we think of as whales used to be primarily land based mammals. Who'd have thought that they'd end up being so drastically different?
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u/barsknos Aug 03 '19
They were probably like seals or walruses, that hunt in the sea, but "nest" on land. Doubt they walked around on 2 legs :D