We think our feet are always on solid ground, but in Florida it's more like Swiss cheese. Dick speaks to Casey McKinlay, who, along with his diving partner Jarrod Jablonski, pulled off a 21-hour dive through underwater caves that connect sinkholes.
Long-time scuba diver Rick Allen makes his living as an underwater photographer. Two years ago, he lost his arm in an accident and vowed that it would not stop him from recovering the pirate Blackbeard's ship from the bottom of the ocean. A week and a half ago, he and his crew recovered a cannon and part of a sword. The sword hilt is so fancy; some speculate it may have belonged to Blackbeard himself.