Justin Bieber ventured into a water tank full of sharks and beautiful women for a new video, but the pop superstar admitted to ET's Christina McLarty that the plunge wasn't without some hesitation. VIDEO: Justin Bieber on Interacting with Hysterical Fans "I'm terrified of sharks," said a wide-eyed Bieber. "I was so scared. I hate sharks. It took, like, an hour for me to even jump in the water."