Reef Snorkel Adventure: Florida Keys Underwater

Dive into vibrant marine life at Sombrero Key Light Reef. Snorkel with experts, enjoy luxury aboard Marathon Mermaid. Perfect for all ages.

Duration: 3 hours
Cancellation: 24 hours
Highlights
  • Sombrero Key Light - Join us for an unforgettable snorkeling adventure at the world’s third-largest barrier reef! Experience the renowned Sombrero Key Light Reef aboard the fastest, newest, and most comfortable boat in Marathon. Begin your journey with a luxurious ride on the stunning Marathon Mermaid to the protected reef, where you can witness…
What's Included
  • Carbonated beverages
  • Snacks
  • Use of snorkeling equipment
What's Not Included
  • Gratuities
Additional Information

Embark on an exciting Reef Snorkel Adventure to the famous Sombrero Key Light Reef and explore the vibrant underwater world of the Florida Keys. Sail on the elegant Marathon Mermaid through pristine waters for a memorable snorkeling journey. This 3-hour trip welcomes participants of all ages to discover the vivid coral and varied marine life, with…

Location
Barnacle Barney's Tiki Bar and Grill
Overseas Highway
Please park in the main parking lot in front of Bluegreen Vacations and walk back to the dock behind the main hotel building.
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Customer Ratings
5.0
(16 Ratings)
5 stars
4 stars
3 stars
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1 star
Dawnj822
Apr 10, 2026
Best experience! - Fantastic! Exceeded every expectation I had. Capt Dawn explained everything and welcomed questions. Gear was new and comfortable, fun experience and would give 10 stars! Booked a sunset cruise because I wouldn’t want to be in the water with anyone else! Thank you!
Review provided by Tripadvisor
Vacationer227058
Mar 27, 2026
Top notch! - Top notch experience from start to finish! Thank you for making my 13 year old's first snorkeling experience a success!
Review provided by Tripadvisor
Trimomof2
Mar 26, 2026
Beautiful trip with great hosts! - Great experience! We loved Donna and Brandon. They were fun and hilarious. We saw so many beautiful fish. We would definitely do another trip with them again!
Review provided by Tripadvisor
Tequilatrails
Mar 15, 2026
You get it all. - The snorkeling is awesome, and the captains make it so much more. Professional, fun, safe, informative, educational. Can’t see how it could be any better.
Review provided by Tripadvisor
881rayy
Mar 14, 2026
Fun Fun Fun - Great time snorkeling at Sombrero Reef! Captain Dawn and 1stMate Brandon were terrific!
Review provided by Tripadvisor
Pauline
Mar 11, 2026
Great time on the water and In - Fantastic trip from start to finish. Both Mandy and Captain Bill were great fun and very knowledgeable. Safety of the passengers was paramount ,whilst still having fun. Equipment was clean and in good order, even provided you with some reef sunscreen. Would highly recommend to anyone wanting a snorkel trip
Review provided by Tripadvisor
50yearoldgirlscout
Mar 10, 2026
Excellent Value - Mandy and Captain Bill were great guides! From beginning to end they were kind and professional. Visibility wasn’t great. Not the fault of the crew, and they did their best and attracted a lot of fish right to the side of the boat! No mask needed ! Great vibe.
Review provided by Tripadvisor
55virginiag
Feb 23, 2026
Perfect snorkel experience! - Marathon Mermaid is THE PERFECT SNORKEL EXPERIENCE! Captain Bill and Mandy gave us great preparation instructions, checked all of our gear even if it wasn’t their gear. All safety rules were clear and easy to follow. So, once we felt safe, it made the whole experience relaxing and so much fun!! We had perfect weather and calm clear water. They had snacks and sodas provided. Plenty of room on the boat even with 30 people! They are entertaining, upbeat people always looking for points of interest…..a pod of dolphins going by to the tune of “Flipper” on the music system,a sea turtle not far from the boat. But they also made sure you knew what to avoid, in our case, a couple of “Man of Wars” nearby. It was by far, the BEST snorkel experience I’ve ever had! In fact it was so good, we went on the sandbar cruise the following day! I also have to mention that my phone conversation with “Lisa” while calling around inquiring about snorkeling experiences, was the reason Our group of 5 booked with them. She was great answering our many questions, patient and polite, Lisa is clearly an asset to the Marathon Mermaid company.
Review provided by Tripadvisor
From $96
up to 15 guests
1 - Adult
Cancellation: Free cancellation up to 24 hours before the start of your experience (local time).