Thursday, September 29, 2011

TRUE SHIT-Sleeping Dolphins



No one believes me when I tell them this, but this shit is true. Dolphins sleep with half their brain. One side shuts down while the other side remains awake. Then, they switch to the other side. During this sleep, they are not very active either remaining at the surface to breath or slowly descending and ascending to get a breath.

It is obvious that dolphins evolved this sleep pattern because they would drown if they slept like humans. It also points to some need for sleep that is indispensable since the sleep thing did not evolve out of them despite being advantageous for survival.

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