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www.scientificamerican.com/article/how-do-whales-and-dolphin

Marine mammals such as whales and dolphins spend their entire lives at sea. So how can they sleep and not drown? Observations of bottlenose dolphins in ...

www.whalefacts.org/do-whales-sleep

To answer the question regarding whether or not whales sleep (which is often asked due to the fact that whales live in water) we first need to explain what affects ...

www.huffingtonpost.com/2014/10/11/humpback-whale-sleep-video_n_5970296.html

Oct 11, 2014 ... Have you ever wondered how humpback whales sleep? A group of underwater photographers known as.

animals.howstuffworks.com/mammals/question643.htm

Whales and dolphins are mammals, so in a lot of ways, they are just like human beings. Among other things, they have similar bone structure, are warm-blooded  ...

www.eaglewingtours.com/this-is-how-killer-whales-sleep-without-drowning

Aug 25, 2014 ... So the big question is: How do killer whales sleep without dying? ... While half of the killer whale's brain catches up on sleep, the other half ...

www.thoughtco.com/do-whales-sleep-2291509

Sep 30, 2016 ... Whales don't sleep the same way as humans, they have to think about every breath they take and only rest one half of the brain at a time.

www.quora.com/How-do-marine-mammals-like-dolphins-and-whales-sleep-without-drowning

Do they just remain at the surface of the water while they sleep, so that they ... The solution for whales and dolphins is to let one half of the brain sleep at a time.

.ask.com/youtube?q=Do+Whales+Sleep%3F&v=HengPojNgbM
Sep 19, 2013 ... discovery ch the magic of the big blue 4of7 europe - sperm whales sleeping.

animals.mom.me/whales-night-6878.html

Many whales and dolphins sleep during the night. Whales, unlike humans who are involuntary breathers, must decide to take each breath. Accordingly, whales ...

www.danielbbotkin.com/2015/07/24/how-many-hours-does-a-whale-sleep

Jul 24, 2015 ... "Do you have any whales?" I asked. "Beluga," the voice said. One beluga." "How long does it sleep?" I asked. "Hold on a minute." I had been ...