Divers Spend Hours Swimming With Man-Eating Sharks

Imagine enduring two days stranded in shark-infested waters. That is the premise of a new Shark Week special, ‘Sharkwrecked,’ airing Thursday on Discovery. Two divers took part in what's said to be “the most dangerous experiment ever,” spending 48 hours in open water and facing off against whitetip sharks, which are considered the most aggressive in the ocean. They're allowed to use life jackets only at night, in case they fall asleep.