University of Florida
Florida Museum of Natural History: Shark Basics
You will find the most commonly asked shark questions in this comprehensive site. Topics include shark basics, shark biology, shark conservation, shark attacks, and shark research.
San Diego Natural History Museum
San Diego Natural History Museum: Shark School: Shark Faq's
Do sharks blink? How many rows of teeth do sharks have? Discover the answers to these questions and many more as you peruse this website.
PBS
Pbs Nature: Sharks
How many species of sharks are there in the world of water? Students will discover how and where sharks live, what they eat and how they socialize through the exploration of this resource.