Friday 14 October 2011

How do Dolphins sleep

Do you know Dolphins sleep with their one eye open ! Dolphins are marine mammals that are closely related to whales and porpoises. Dolphins are among the most intelligent animals and are known for their friendly appearance which make them popular in human culture.


Dolphins sleep very different than most mammals in a way that they are not totally unconscious when they sleep.
Researches have shown that only half of dolphin's brain sleep at a time, leaving the other part fully aware of dangers. Besides being aware of dangers, dolphins need to be conscious to breathe. This means that they can not go under deep sleep because they could drown.
Apart from their sleeping, the dolphins don't drink water because if they drink sea water it would make them ill and potentially kill them. They get all their liquid needs from the food they eat.
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