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Experience a 3-hour snorkeling trip at Sombrero Reef aboard the Marathon Mermaid for $89. Explore Florida's third-largest barrier reef with top gear and guides.
The Marathon: Snorkeling Adventure by Boat at Sombrero Reef offers an accessible way to explore the stunning underwater world of the Florida Keys’ third-largest barrier reef. Priced at $89 per person and lasting 3 hours, this tour provides a balance of adventure and comfort, making it a compelling choice for those interested in marine life and reef ecosystems. The tour departs from Bluegreen Vacations at the marina in Marathon, with the luxurious Marathon Mermaid serving as your vessel.
This experience is best suited for travelers who appreciate a well-equipped, guided snorkeling trip that combines speed, style, and scenic views. The boat is noted for being the fastest in Marathon, allowing for quick access to the reef, which helps maximize your time exploring underwater. While weather conditions can sometimes lead to cancellations, the tour is designed to be safe and enjoyable with top-rated gear and attentive crew, making it a reliable option for marine enthusiasts.


The tour begins at Bluegreen Vacations at the marina in Marathon, located at 1688 Overseas Highway. Meeting here is straightforward, and the crew is praised for their efficiency and friendliness. The live tour guide communicates in English and ensures all participants are ready before departure.
It’s recommended to bring sunglasses, swimwear, a towel, biodegradable sunscreen, comfortable clothes, and a reusable water bottle. Travelers should avoid bringing glass objects or alcohol, and consider motion sickness prevention if prone to seasickness.
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The Marathon Mermaid sets this tour apart through its reputation as the fastest boat in Marathon. This means more time exploring the vibrant reef, and less time in transit. The boat is described as luxurious, and its design facilitates a smooth, comfortable ride even in slightly choppier waters.
The crew ensures the boat remains spotless and equipped with a dry box for personal belongings, elevating the overall experience. The vessel’s speed and comfort make the journey to Sombrero Key Light Reef an event in itself, with scenic views over crystal-clear waters.

Sombrero Reef hosts a diverse marine ecosystem that appeals to snorkelers of all levels. The reef features colorful corals and is home to exotic fish, which can be seen swimming close to the surface.
Many reviews highlight seeing a nurse shark, stingrays, and sea turtles during the snorkeling. The clarity of the water enhances visibility, providing excellent opportunities for photography and observing marine creatures in their natural habitat. The reef’s depth and the vibrant environment make it an ideal spot for snorkeling, even for those with limited experience.
The crew members are described as efficient, friendly, and informative, with some reviews mentioning the guides by name. They lead the snorkeling activity, helping participants navigate the waters safely and identify marine species.
The crew also manages safety instructions, especially in the case of potential seasickness, and maintains the boat’s cleanliness. Many reviewers appreciate the helpfulness of the crew, which makes the tour feel secure and well-organized.
More Great Tours NearbyThe snorkeling equipment provided is top-rated, ensuring guests have a comfortable and effective experience underwater. While some mention minor issues like snorkels leaking water, these are not common and do not detract significantly from the overall enjoyment.
Having well-maintained gear enhances the snorkeling experience, allowing visitors to focus on observing marine life rather than equipment problems. The availability of dry storage on the boat also helps keep belongings safe and dry during the water activity.

After exploring the reef, the return trip on the Marathon Mermaid is relaxed, with beverages, fresh fruit, and light snacks available. This makes it easy to unwind and reflect on the underwater sights while enjoying the scenic cruise back to the marina.
The refreshments add a touch of comfort and help complete the experience, making this tour suitable for those who value a relaxing end after active snorkeling.

Adverse weather conditions, such as high winds, can lead to cancellations, as noted in some reviews. The tour provider offers free cancellations up to 24 hours in advance, providing flexibility if plans change due to weather or low bookings.
It’s advisable to consider motion sickness prevention if prone to seasickness, as choppy waters can sometimes occur. The tour’s scheduling in the morning often helps avoid afternoon weather disturbances.
This snorkeling adventure suits travelers seeking a well-organized, guided marine excursion with top-rated gear and fast transportation to Sombrero Reef. It’s ideal for those interested in diverse marine life, comfortable on a luxurious boat, and appreciative of scenic waters.
The tour works well for families, couples, and groups of friends, especially given the relaxed pace and refreshments provided. However, participants should be comfortable in the water and prepared for potential weather variability.

The Marathon Snorkeling Adventure at Sombrero Reef provides a practical balance of speed, comfort, and marine exploration. The luxurious Marathon Mermaid ensures a swift, smooth ride, making the most of the 3-hour window to view colorful corals, exotic fish, and possibly larger species like sea turtles or nurse sharks.
While weather-related cancellations are a possibility, the tour’s flexible refund policy and high-quality gear make it a reliable choice for marine lovers. This experience offers good value, especially for those eager to experience the third-largest barrier reef with knowledgeable guides and scenic comfort.
Is the tour suitable for beginners?
Yes, the tour is accessible for snorkelers of all levels, with guides providing safety instructions and top-rated equipment to facilitate an enjoyable experience.
What should I bring for the snorkeling trip?
It is recommended to bring sunglasses, swimwear, a towel, biodegradable sunscreen, comfortable clothes, and a reusable water bottle. Avoid bringing glass objects or hard alcohol.
Can I cancel if the weather is bad?
Yes, cancellations are permitted up to 24 hours in advance for a full refund. Weather conditions such as high winds can lead to cancellations on the day of the trip.
What marine animals might I see?
Expect to see colorful corals, exotic fish, and potentially sea turtles, stingrays, and nurse sharks based on the reviews and reef diversity.
How long is the boat ride?
The boat ride is designed to be quick and comfortable, thanks to the fastest vessel in Marathon, allowing more time for snorkeling and less time in transit.
Where does the tour depart from?
The tour departs from Bluegreen Vacations at the marina in Marathon, located at 1688 Overseas Highway.