Dolphins normally sleep only with half of their brain at a time. This is
due to the fact that dolphins are conscious breathers (they breathe using lungs), so if they sleep
and go unconscious, they would simply suffocate or drown. This is why
sleeping dolphins are seen as resting, floating with one eye open at the
surface.
Source: http://en.wikipedia.org/wiki/Dolphin
Title :
On Regular Day, Dolphins Sleep with an Eye Open
Description : Dolphins normally sleep only with half of their brain at a time. This is due to the fact that dolphins are conscious breathers (they bre...
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