> Date: Wed, 11 Mar 1998 14:45:26 -0800 > From: Patricia Gilbert <email@example.com> > To: aRomero@ACC.FAU.EDU, firstname.lastname@example.org > 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.