Adventure Diving & Snorkeling in the Florida Keys

Marathon, in the heart of the Florida Keys, offers some of the world's best snorkeling and diving just minutes away from our dock. Experienced divers and snorkelers as well as beginners will enjoy Marathon's perfect location, which offers easy access to mysterious shipwrecks as well as outstanding coral reef ecosystems and their unbelievable variety of marine life.

Marathon's central location makes it truly a diver's and snorkeler's paradise. Stay at Tranquility Bay, our luxury Florida Keys beach house resort, and you not only gain access to some of the most exceptional underwater locales in the Florida Keys, including the only living coral reef in North America, but also to the experienced Diving and Snorkeling team, led by the friendly expert and friendly staff of Turtle Island Watersports.

Turtle Island consists of the finest Captains, and Scuba/Snorkel Dive Professionals. Our Dive Professionals are all certified dive instructors that can teach you how to dive in a day, provide you with full scuba certification, or broaden your diving horizons with specialty scuba classes.

Come dive with Turtle Island and put yourself in the most magnificent aquarium in the world, The Atlantic Ocean.

Read more about the amazing Daily Reef Adventures and Scuba Instruction at the Tranquility Bay Beach House Resort, or make a reservation using our Online reservation request Form.