Manta Rays Use Tiny Fish to Help Them Stay Clean

Wrasse perform a vital cleaning function for other fish, by ridding their bodies of dead cells and parasites. Their biggest customers--literally and figuratively--are the massive manta rays.

From the Series: David Attenborough's Great Barrier Reef: Visitors http://bit.ly/2EAf5AT


Source: Smithsonian Channel, https://www.youtube.com/watch?v=srBKjMVEmN8
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