They don't drown because some whales go up to shore and sleep up there so then they don't drowned.
If they fully slept, they would drown. Half of their brains sleep at any one time.
Blue whales migrate. They cannot hibernate as they would drown. Whales sleep by switching off one side of the brain at a time.
Unlike most animals, whales are conscious breathers. All mammals sleep, but whales cannot afford to become unconscious for long because they may drown. It is thought that only one hemisphere of the whale's brain sleeps at a time, so they rest but are never completely asleep.
well if baby whales drowned when they were born i dont think there would be any adult whales. and there are, so, im gonna say no.
They dont have one, they live under water, but i dont know where they sleep as they are mammals and have to breach every few hours for air.
Yes. Sperm whales sleep vertically with head down.
Yes, whales can drown. Despite being marine mammals, they still need to breathe air, so if they are unable to reach the surface to breathe, they can drown. This can happen if a whale is entangled in fishing gear or stranded on land.
they swim when they sleep
Ask your doctor
In water
Yes.
Killer Whales sleep by floating on the surface.