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Mon Sep 5

Sleeping fish? From sharks to salmon, guppies to groupers, here's how they grab a snooze

Written by Michael Heithaus, Executive Dean of the College of Arts, Sciences & Education and Professor of Biological Sciences, Florida International University

A large group of yellowfin tuna swimming off the coast of Italy. Like all fish, they sleep, but it's not like human sleep.Giordano Cipriani/The Image Bank via Getty Images Sleeping fish? From sharks to salmon, guppies to groupers, here's how they grab a snooze

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Could you explain how...

Sleeping fish? From sharks to salmon, guppies to groupers, here's how they grab a snooze

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