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Yup. Unlike most sea creatures, the ancestors of whales used to live on land.

More info: https://evolution.berkeley.edu/evolibrary/article/evograms_0...



IIRC from reading Dawkins books, hippos are more closely related to whales than to any land animal.


Yes, but their last common ancestor was not much like either. Lots about the sequence of changes seems to be established now: http://www.eartharchives.org/articles/the-evolution-of-whale...




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