Description

In 1919, whalers hauled up a whale with legs - a discovery that would blow whale evolution out of the water.

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What if the biggest animal on Earth has an even bigger secret? In this video, we’re taking a look at the incredible journey of the whale, tracing its past from a furry ancestor walking on four legs, to the majestic ocean giant. From vestigial bones to shocking fossils, the skeletons of these living time machines hold clues that unlock the secrets of their evolution. Prepare to meet the “walking whale” and see how a land beast made its final journey into the sea.



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0:00 A Whale With Legs
2:13 Vestigial Bones
5:14 Basilosaurus: Dinosaur Whale
7:23 Dorudon: Evidence of Legs?
9:00 Pakicetus: The First Whale
17:58 Ambulocetus: The Walking Swimming Whale
20:07 Maiacetus: Whales In Water
22:43 Becoming Fully Aquatic
26:17 Becoming Giants



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References:
“A remarkable case of external hind limbs in a humpback whale”, via archive.org https://astrumspace.info/hindlimbs
“Basilosaurus cetoides”, via encyclopediaofalabama.org https://astrumspace.info/basilosaurus
“The evolution of whales (Evograms)”, via berkeley.edu https://astrumspace.info/evograms
“World’s oldest whale fossil found in the Himalayas”, via independent.co.uk https://astrumspace.info/himalayanwhale
“Gingerich’s research on archaeocete whales”, via lsa.umich.edu https://astrumspace.info/gingerich
“Teaching whale evolution through fossils”, via biomedcentral.com https://astrumspace.info/whale_evolution
“Origin of whales from early artiodactyls”, via science.org https://astrumspace.info/whaleorigin
“Pakicetus Inachus”, via deepblue.lib.umich.edu https://astrumspace.info/pakicetus
“When whales walked on four legs”, via nhm.ac.uk https://astrumspace.info/walkingwhales

“Perucetus colossus: discovery of a giant ancient whale”, via nature.com https://astrumspace.info/perucetus



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Credits
Narrator: James Stewart
Producers: Alex McColgan, James Stewart
Writer: Will Bunker
Video Editors: Celal Kaçar, James Horsley
Animator: Peter Sheppard
Researcher: Shourya Shrivastava
Thumbnail Designer: Peter Sheppard
Channel Manager: Georgina Brenner
Production Manager: Raquel Taylor
Head of Astrum: Jess Jordan
Creator of Astrum: Alex McColgan



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#AstrumEarth #Astrum #WalkingWhales