Re: The Third Eye

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Thu, 11 Apr 1996 17:10:29 -0500
>From: P3D John Bell  <johnb@xxxxxx>
>Subject: The Third Eye

>Any zoologists out there aware of animals that have more than two eyes? Where
>do they keep the "extras"? And what's their visualizing advantage thought to
>be? 

Plenty. Spiders have multiple *kinds* of eyes (i.e. some simple, some
compound). The different kinds of eyes are used for different purposes.

Scallops have numerous eyes, all around the edge of the shell, which they
may use to sense danger so they can swim away. (Thus illustrating that
bivalves are not as limited as one might think.)

John R.


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