Subject: Whale questions

Al Romero (romero@macalester.edu)
Tue, 02 Feb 1999 13:29:42 -0600

At 11:31 AM 2/2/99 -0500, you wrote:
>Why do whales shed their skin?

The epidermal cells of the skin are shed in order to reduce turbulence and
drag by braking up and dispersing the energy contained in the water
particles passing over the body.  They achieve that by secreting tiny
droplets of a high polymer of ethylene oxide.

>How do whales sleep?

Please refer to the answer a gave yesterday by checking the archives of
WhaleNet.

Thanks.


Aldemaro Romero, Ph.D.
Director and Associate Professor
Environmental Studies Program
Macalester College
1600 Grand Ave.
St. Paul, MN 55105-1899
(651) 696-8157
(651) 696-6443 (fax)
romero@macalester.edu