Chris Murray, 50, was attempting to swim the 20 miles between Catalina Island and the Los Angeles County coast before the terrifying encounter took place..
Going for a dip in the ocean is about to get a lot safer. Scientists have developed a shark-proof wetsuit - and it's even resistant to bites from Great Whites.
Chilling footage shows just how close Jimi Partington came to death as the crazed creature lunges at the transparent box he is in, shattering it into pieces.