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Whales and other water-dwelling mammals such as dolphins are concious breathers. This means they must make a concious effort to swim to the surface to get air. This is opposite to humans, as the brain controls breathing. Whales and dolphins instead let half of the brain sleep at one time, so the animal is never completely unconscious, but it still gets rest periods.
What else can I help you with?
Do Sperm whales sleep vertical?
Yes. Sperm whales sleep vertically with head down.
How do whales and dolphins sleep without drowning?
they swim when they sleep
Where do killer whales sleep?
In water
Do whales sleep in the water?
Yes.
How do Killer whale sleep?
Killer Whales sleep by floating on the surface.
Which part of the sea do killer whales sleep in?
they sleep and like the tropical water
Where do Beluga whales sleep?
At the bottom of the ocean!
Do whales sleep in the summer?
No. While they do sleep in the Summer, they do not sleep any more in the Summer than in the Winter.
What time of day do blue whales sleep?
It is not known what time of the day blue whales sleep. The blue whale is one of the largest and heaviest animals in the world.
Why don't whales drown when they sleep?
They don't drown because some whales go up to shore and sleep up there so then they don't drowned.
Do whales sleep during migration?
Sometimes,but not always.
Do whales sleep in a shallow cove?
No, in the open ocean.
