of glasses. i'm 17 years old. although many people believe kids can't make a difference, i have. anyone can do it. it's about being motivated and going out there and just doing it. a hundred miles of open ocean stretched between cuba and florida. >> keep it up, diana! >> water surging with currents, teeming with sharks and deadly jelly fish. a route so difficult, no swimmer has ever crossed without flippers or a shark cage. >> i'm barely alive right now, i'm just barely alive. >> the swim starts here. she's going to jump in. now inside an extraordinary journey. >> seems almost like a dream to