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Eons: How the Walrus Got Its Tusks

7 minutes 42 seconds

Now Playing As: Captioned (English) (change)

The rise and fall of ancient walruses, and how modern ones got their tusks, is a story that spans almost 20 million years. While there are parts of the story that scientists are still trying to figure out, it looks like tusks didn’t have anything to do with how or what these animals ate. Part of the "Eons" series. Please note this title contains discussions on sexual reproduction and selection.

Media Details

Runtime: 7 minutes 42 seconds

Topic: Science
Subtopic: Earth Sciences, Marine Life, Prehistoric Life
Grade/Interest Level: 10 - 12
Standards:

Release Year: 2020
Producer/Distributor: PBS Digital Studios
Series: Eons
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A Wooly Rhino is grazing on the slope of a mountain.

Still image from: Eons: The Hellacious Lives of the "Hell Pigs"

A group of four legged terrestrial creatures. Caption: Synapsids.

A pair of Ichthyosaurs hunting prey in the sea.

Still image from: Eons: When We Met Other Human Species

Still image from: Eons: How Volcanoes Froze the Earth (Twice)

Still image from: Eons: How Earth's First, Unkillable Animals Saved the World

A giant deer roams a grassland.

An illustration depicts the dinosaur, Coelophysis, with new born Coelophysis in between its beak.

A painting depicts scientists comparing Piltdown Man's remains to other species. Charles Dawson and Sir Arthur Smith Woodward are seen standing together.