For the first time, Shark Week uses real shark attack footage captured by eye-witnesses to examine first-hand accounts from a nurse who lost her arm in an attack while vacationing in Mexico and an Australian Navy Diver who lost an arm and a leg.

TOP 10 SHARKDOWN updates the international shark attack files for the 21st century and takes a closer look at the sharks viewers won't want to meet at the beach this summer - and the ones swimmers and surfers are most likely to encounter. From the weird - the feisty cookie cutter, which bites cookie-shaped circles out of its prey; to the macabre, like the Sand Tiger, whose cannibalistic young devour each other in the womb; to the infamous Great Whites, Tiger Sharks, and Bull Sharks - TOP 10 SHARKDOWN ranks these amazing predators.