This special Deadly Pole to Pole episode has got serious bite - it's all about sharks. Steve travels the globe to swim with these misunderstood predators and prove they are not the brutish killers many people believe. In the Bahamas, Steve uses time-slice cameras to see what makes a shark's bite so deadly, but there is more to these perfect predators than jaws. Steve investigates the highly-honed superpowers of the hammerhead shark. Finally, Steve puts his theory that sharks are not mindless killers to the ultimate test. In Hawaii, he swims with the oceanic whitetip, a shark with a man-eating reputation, before heading to Mexico to dive outside the cage with the most feared shark on the planet, the great white.