Dolphin World - A chance to swim with Natural Dolphins and Trained Dolphins in the Florida Keys. In the Natural Dolphin swim you have the chance to Freeswim and snorkel with the dolphins. In the Structured Dolphin swim you are with trained dolphins and have a chance to pet the dolphins, toe pushed, tricks, and best of all a dorsal fin ride. You need to make reservations early. Guided tours and drive yourself tickets available.