Programs that allow tourists to swim and play with trained dolphins have become popular in recent years. Here's a special one at the Florida Keys Dolphin Research Center that includes the chance to meet the daughter of the famous Flipper. (length 1:44)

Behind a motel in Marathon lies a unique place in the Florida Keys. Discover the world's only hospital dedicated to sea turtles, and meet the man who runs it, working tirelessly to save this endangered species. (length 1:42)

Few visitors to the Florida Keys know about its natural attractions beyond the famous diving and fishing spots. Meet a guide who leads educational kayaking trips deep into the backcountry, where a fascinating and fragile marine sanctuary awaits. (length 1:43)