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

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

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

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected].

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