Biology, 11.03.2020 23:21 LilTJSavage22

Dolphins are able to sleep without drowning because they have gills, like fish do. have a special opening that allows air in but not water. sleep on just one side of their brain at a time. inflate their bodies before sleep, which maintains them floating upright so they can breathe without taking in any water.

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Dolphins are able to sleep without drowning because they have gills, like fish do. have a special op...

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