Subject: Sleep (fwd)

Mike Williamson (
Sat, 17 Oct 1998 12:45:30 -0400 (EDT)

---------- Forwarded message ----------
Date: Fri, 16 Oct 1998 16:16:13 -0400
From: Phil Clapham <>
Reply-To: Marine Mammals Research and Conservation Discussion
Subject: Sleep

Regarding Sean Todd's query on sleep, a good review of this (and related
matters) can be found in:

Klinowska, M.  1986.  Diurnal rhythms in Cetacea - a review.  Rep. int.
Whal. Commn., Special Issue 8: 75-88.

Among other things, Klinowska's cites evidence from captive Tursiops
studies of animals being literally "half asleep", i.e. apparently
resting one hemisphere of the brain at a time while the other is awake.


Phillip J. Clapham, Ph.D.
Large Whale Biology Program
Northeast Fisheries Science Center
166 Water Street
Woods Hole, MA 02543

tel (508) 495-2316
fax (508) 495-2066