Tuesday, September 7, 2010

Do Fish Sleep?

This question gets asked about a lot of sea animals. Most animals need down time to re-energize or evade predators. While this is often called "sleep", sometime hibernation might be a slightly closer term.

Fish do not have sleep like higher primates. They do not close their eyes or have REMs but scientists feel certain they experience a rest period when all body functions have slowed to a minimal level.

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