Whales and Dolphins?

Question

Do Whales and Dolphins Sleep?

Answer 1

They are able to sleep with one half of their brain at a time, so they are always techincally "half awake".  I've heard they can even eat in their sleep, since they are still somewhat awake

Answer 2

Yes. Most species typically head to deeper waters to sleep as they can hold their "breath" for a long time and its a little safer. They are in pods and families and I do not think that whole pods sleep at the same time. Some species of whale actually sleep at the surface of the water, but I'm not sure which that is.

Answer 3

Yes they sleep. They instinctually swim and rise to the surface to breathe, even while asleep.