Diving, Snorkeling, & Sunset Cruises

Explore Marathon and the Florida Keys

Start your Florida Keys adventure on the water. Our Marathon tours and excursions offer a variety of activities to add to your agenda, including Florida Keys diving, snorkeling, and sunset cruises. Explore the depths of the bright blue waters surrounding the resort, witness the vibrant colors of the reef below, and learn more about the underwater ecosystems of Marathon and the greater Florida Keys.


Brush up on your diving skills or start from scratch with refresher courses, certification classes, and hands-on instruction from certified teachers. Our Florida Keys diving excursions are open to all ages and provide an easy, fun, and relaxing experience in the water. You’ll have two different locations to explore, both offering a variety of fascinating underwater life, and our high-quality equipment is regularly checked to make sure it’s up to date.


Board the Diane Marie, our 38-foot dive-and-snorkel boat for a day of Florida Keys snorkeling fun in the sparkling blue waters around our resort. Set sail for two different locations to explore a variety of reef life during your excursion, including a stop at the protected Sombrero Lighthouse Reef. Your experience on the water is guaranteed to be fun, easy, and relaxing. Our team of experts provides insight into the best places to spot wildlife for an unforgettable Marathon snorkeling experience.

Sunset Cruises

Gather on the Diane Marie just before sunset and set out on a picturesque slow cruise along the bay. Enjoy music, drinks, and great conversation while witnessing a breathtaking sunset over the calm Florida waters. Our sunset cruise is open for all ages and a BYOB policy is welcome and encouraged for adults. This tranquil Florida Keys sunset cruise is sure to set the mood for an enjoyable night in Marathon.