Description：Chris Hemsworth has a real passion for sharks. The Hollywood star talks to experts to find out more about the apex predators of the oceans.
Description：Valerie Taylor is a shark fanatic and an Australian icon – a marine maverick who forged her way as a fearless diver, cinematographer and conservationist. She filmed the real sharks for Jaws and famously wore a chainmail suit, using herself as shark bait, changing our scientific understanding of sharks forever.
