Subject: Sleep patterns of whales

Aldemaro Romero (
Wed, 11 Mar 1998 22:59:48 -0500

> Date: Wed, 11 Mar 1998 14:45:26 -0800
> From: Patricia Gilbert <>
> To: aRomero@ACC.FAU.EDU,
> Subject: sleep patterns of whales
> Since whales must breathe at intervals, how do they get enough sleep?

They sleep at the surface of the water. Occasionally a whale may slip
just below the surface, but a reflex reaction shuts the blowhole at
once.  The animal spouts and takes a breath as soon as it clears the
surface. All this takes place automatically without the animal noticing
what is going on while sleeping.

Best wishes,

Aldemaro Romero, Ph.D.