March 2013 Stingrays

Explore the fascinating world of stingrays in this issue of The Witness.  Did you know that sawfish are really rays?  Or that the largest stingrays can weigh over two tons?  This issue examines the many types of rays, with their physical characteristics, habits, and human uses of rays.

Stingray photograph by Nicolai Johannesen; used under the Creative Commons Attribution 2.0 Generic license (http://creativecommons.org/licenses/by/2.0/deed.en).