Countdown to Discovery Shark Week

The Discovery Channel’s Shark Week kicks off August 4. How much do you know about these infamous fish?  For starters, these creatures have roamed the Earth for more than 250 million years. And, although they are known to prey occasionally on humans, only a few of the more than 200 species of sharks are considered maneaters. Strengthen your shark knowledge with 100 fascinating facts about the world's most feared creatures as you prepare for Shark Week 2013. Just don't bite off more than you can chew! http://bit.ly/15G9gJa