Herpetologist Brady Barr has faced his fair share of aquatic predators, but now he's going up against one of the toughest creatures in the ocean -- sharks. Most shark attacks on people are committed by just three species: the tiger shark, the bull shark, and the great white. Brady is going to see if he can find out which one has the deadliest bite. His travels will take him from the Bahamas to Florida to South Africa. He'll do everything from capturing a shark and measuring its maximum bite force to diving deep underwater, into the shark's territory, to go face-to-face with these creatures. Experts like Ryan Johnson will help Brady along the way, and so will the use of new technology, like a camera-equipped remote control helicopter, that will enable him to see shark attacks up close.