Do Dolphins Sleep? Questions and Answers about the Sea.

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Q: Do dolphins sleep?
Dolphin sleeping in bed graphic
A:
Dolphins do sleep, but not quite in the same way that people do. They sleep with one half of the brain at a time and with one eye closed. Dolphins rest this way on and off throughout the day, switching which side of the brain they shut down. During these periods, everything inside the dolphin slows down, and the mammal moves very little.

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