DAREDEVIL SWIM.

ROBIN ROBERTS (ABC NEWS) (Off-camera) Diana Nyad has nothing to prove. She already holds the record for longest ocean swim ever. But she recently decided to take on a staggering challenge. At the age of 61, she is poised to swim from Cuba to Florida. Becoming the first person to do so without a shark cage. And Diana joins us now on the phone. She's in Key West, before she makes the trek to Cuba. Oh, so good to talk with you for a little bit, my friend. So, tell us why, 32 years later, you want to do this again. [ABSTRACT FROM PUBLISHER]