Tracing Whale Evolution: Origin of Cetaceans

Whale evolution is an enigma, it is a testament of the potency of evolution by natural selection, in shaping organisms to whatever ways the environment demanded. Just a century ago, no one would have guessed that whales were descended from a small deer-like animal.
They underwent a drastic change from a racoon-sized land-dwelling animal to the biggest animal to have ever existed on the planet, and in between, they took the shape of uncanny otherworldly creatures.
In this video we take a look back at one of evolution's most epic tales and the bizarre animals whose remains taught us the story.

Sources and credits:
https://docs.google.com/document/d/11...