Soupfin sharks (VIDEO)

University of California - San Diego

Caption

Shark researcher Andy Nosal has documented the first conclusive evidence in any animal of triennial philopatry, a term referring to the periodic return of an animal to the same location. He found that soupfin sharks return to the same waters off La Jolla, Calif., every three years.

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Trystan Snodgrass

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Please credit Trystan Snodgrass

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