How do marine mammals sleep underwater?

How do marine mammals sleep underwater?

If marine mammals want to sleep, they can’t close their eyes and drift off all night, because they need to rise to the surface to get air. Because of this, it cannot float on the surface of the water and sleep It exposes them to predators and heat loss. So how do marine mammals sleep without putting themselves in danger?

One solution is to shut down half of their brain at a time. It’s called unihemispheric sleep, and it’s one way Marine mammalsThey, like dolphins, can rest while in open water.

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