LISTEN: ABC's Alex Stone.
We are hearing today in an exclusive interview from the Alabama man who went overboard on a Carnival Cruise last week. He disappeared after leaving a bar and the next day his sister reported he never returned to their stateroom. He was found floating in shark infested waters of the Gulf of Mexico over 20 hours later. And he survived to tell his story! There are gaps in his memory but he remembers fighting off something he thought was a shark and eating a piece of wood floating by to keep his energy. Alex will play you his story.