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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 ... Sleeping Humpback Whale Captured In Rare Footage ... Some humpback whales have been documented sleeping upside down (like the one ...

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? ... Dolphins and beluga whales sleep by shutting down one hemisphere of ...

www.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. ... How do they breathe when they sleep like that. Read more.
www.ask.com/youtube?q=Do+Whales+Sleep%3F&v=jOamfKwr6aU
Oct 10, 2014 ... Sleeping Humpback Whale. Panga MX. Loading ... Ah, whales, the most majestic creature in the sea. .... I never knew that whales slept like that.

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.

us.whales.org/faqs/facts-about-whales-and-dolphins/how-do-dolphins-sleep

Dolphins sleep in a very different way to the way we humans do. Humans have prolonged periods ... More facts about whales and dolphins. Atlantic white-sided  ...

www.ask.com/youtube?q=Do+Whales+Sleep%3F&v=G_PmedKLbLI
Jul 7, 2009 ... Whales sleep by only allowing half of their brain to rest at a time so that they may look out for danger and breath air at the surface of the water.