Feb 2, 1998 ... Marine mammals such as whales and dolphins spend their entire lives at sea. So
how can they sleep and not drown? Observations of ...
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 ...
Oct 11, 2014 ... Have you ever wondered how humpback whales sleep? A group of underwater
photographers known as.
Whales are voluntary breathers, meaning they think about every breath they take.
That means they can't sleep the way we do. Learn how cetaceans (whales, ...
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
Many whales and dolphins sleep during the night. Whales, unlike humans who
are involuntary breathers, must decide to take each breath. Accordingly, whales ...
www.ask.com/youtube?q=Do Whales Sleep?&v=HengPojNgbM
Sep 19, 2013 ... discovery ch the magic of the big blue 4of7 europe - sperm whales sleeping.
What is outstanding about whales is the way they can sleep. While all mammals
sleep, whales cannot afford to become unconscious for long because they may ...
Apr 14, 2014 ... Dolphins sleep with one eye open, and with half their brain wide ... the group of
marine mammals that includes whales, orcas and porpoises.
Feb 21, 2008 ... Researchers sneak up on sleeping whales ... If they had decided to take action
collectively — sperm whales do engage in communal defence ...