Shark Guide - Discovery ChannelDiscovery's comprehensive guide to sharks. Covering everything about sharks from where they live, what they eat, and how they behave with stories, videos, maps and ...
http://dsc.discovery.com/sharks/Shark - Wikipedia, the free encyclopediaWikipedia provides a great deal of information about sharks, their biology and classification, accompanied by photographs and diagrams.
http://en.wikipedia.org/wiki/SharkSharks - Livescience.comLearn about sharks, one of the most mysterious groups of creatures roaming the Earth today. LiveScience offers pictures, features, and current news about sharks.
http://www.livescience.com/topic/sharksSharks & Rays - Animal InfoBooksComprehensive reference about sharks from Sea World. Their interactive anatomy tour allows you to familiarize yourself with shark external and internal features.
http://www.seaworld.org/animal-info/info-books/sharks-&-rays/index.htmShark Research InstituteAn international scientific organization dedicated to the conservation of sharks. Specializes in the study of whale sharks.
http://www.sharks.org/