Subject: Sharks and whales

Phil Clapham (phillip.clapham@noaa.gov)
Thu, 14 Jan 1999 14:48:04 -0500

Hi:

Well, other than the fact that skarks are fish and whales are mammals -
which is a pretty big difference - there are some other differences and
similarities.  The greatest similarity is their body shape, which in
both cases is designed to be efficient in water ("hydrodynamic"),
allowing them to move easily through their einvironment.  The body is
sleek and streamlined, and the limbs have evolved into flippers.  In
sharks the tail is vertical, in whales it's horizontal.

They eat different things most of the time.  Some whales eat plankton
such as copepods or krill, while others eat small fish or squid.  Sharks
eat lots of things, but fish and squid are in the diet of some species
also.

Whales have larger brains than sharks.  And whales are sometimes
attacked by sharks (not clear how frequently - there's a lot of argument
about this).

Phil Clapham


Jeave@aol.com wrote:
> 
> how are sharks and whales alike? diffrent?

-- 



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

tel (508) 495-2316
fax (508) 495-2066
Internet: phillip.clapham@noaa.gov