How the Starfish Got Its Arms's primary photo
  • PBS Eons How the Starfish Got Its Arms (Season 4, Episode 5)
  • TV Episode | 12 min | Documentary

PBS Eons

How the Starfish Got Its Arms (Season 4, Episode 5)
TV Episode | 12 min | Documentary
For us bilateral creatures used to anatomical organs coming in pairs, a five armed starfish with radial symmetry seems pretty strange. Yet they evolved from creatures with bilateral symmetry and biologists naturally wonder how and why. ...See moreFor us bilateral creatures used to anatomical organs coming in pairs, a five armed starfish with radial symmetry seems pretty strange. Yet they evolved from creatures with bilateral symmetry and biologists naturally wonder how and why. They speculate it may relate to developing a mouth down feeding style, flexibility of movement, or the natural structure of the mineral that gives them structure. Written by David Foss See less
Read more: Plot summary
Writer
Devin A. Reese
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Status
Edit Released
Updated Aug 24, 2021
Release date
Aug 24, 2021 (United States)

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2 cast members
Name Known for
Kallie Moore primary photo
Kallie Moore
Self - Host Self - Host   See fewer
Why Dinosaurs? (2024)
Joshua Jones primary photo
Joshua Jones
Self - Joshua jones (uncredited) Self - Joshua jones (uncredited)   See fewer
Carolina Blue Sky (2020)
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