This video says about itself:
Parrotfish Poop! | JONATHAN BIRD’S BLUE WORLD Extra
23 September 2016
In this short Jonathan Bird’s Blue World Extra, Jonathan discusses where sand comes from and you may be surprised to learn that a lot of sand is actually fish poop!
Jonathan Bird’s Blue World is an Emmy Award-winning underwater science/adventure program that airs on public television in the United States.
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