THE ADVENTURE COLLECTIVE® · Independent discovery and booking for outdoor travel
Combine two classic Marathon experiences—snorkeling Sombrero Reef and relaxing at Molasses Key sandbar—on a single 4-hour outing. Perfect for families and first-time snorkelers, this trip includes gear, light snacks, and a scenic cruise along the Seven Mile Bridge.
Combine two classic Marathon experiences—snorkeling Sombrero Reef and relaxing at Molasses Key sandbar—on a single 4-hour outing. Perfect for families and first-time snorkelers, this trip includes gear, light snacks, and a scenic cruise along the Seven Mile Bridge.
Book with Marathon Mermaid
Verified experiences and guided adventures in the surrounding area.
Operated by Marathon Mermaid · Marathon, Florida
On this four-hour Marathon Mermaid excursion you'll split time between two of the Florida Keys' most inviting marine places: Sombrero Reef and the Molasses Key sandbar, departing from Marathon on Florida's Overseas Highway. The trip launches from the dock behind Bluegreen Vacations, 1688 Overseas Highway, a short walk from the gravel parking lot, and runs as a relaxed mix of guided snorkeling, shallow-water play, and scenic cruising along the iconic Seven Mile Bridge. At Sombrero Reef, part of the Florida Keys National Marine Sanctuary, clear water and shallow coral formations create accessible snorkeling for first-timers and experienced snorkelers alike. Look for brain coral, staghorn and elkhorn colonies, schools of angelfish and parrotfish, and the occasional green sea turtle or southern stingray. Guides provide masks, snorkels, and vests, and enforce rules to protect the reef: no touching or standing on coral, and no full-face masks. After the reef section the boat heads to Molasses Key, a low-profile sandbar where waist-deep turquoise water invites floating, kayaking, and paddleboarding. The sandbar is ideal for families: shallow, warm, and ringed by bright sandbanks perfect for photos and easy swims. During the return ride the captain will steer past the Seven Mile Bridge so guests can photograph the structure while sipping a complimentary drink. This combo is a practical option for travelers who want to experience both reef ecology and classic Keys sandbar time without juggling separate transfers. It's also one of the more accessible marine outings in Marathon: trips are stroller- and wheelchair-accessible at the dock, service animals are allowed, and flotation devices are provided. Group size tops out at 42 passengers, which keeps the vibe social but controlled. Practical notes: arrive 30 minutes before departure to check in at the office at the top of the dock, bring reef-safe sunscreen and a swimsuit, and be prepared to swim independently to enter the water. The operator offers a full refund for weather cancellations or 24-hour prior cancellations. Route and wildlife sightings vary with conditions, some days favor extended sandbar time if reef snorkeling isn't safe. For visitors staying in Marathon, this four-hour outing is an efficient way to experience the Keys' underwater life, learn best practices for marine stewardship, and walk away with vivid memories of crystalline water, colorful reeffish, and wide sand flats under the Seven Mile Bridge. Book through Marathon Mermaid's FareHarbor page to reserve a spot; groups fill quickly in high season. Expect complimentary light snacks and drinks onboard, snorkel gear and instruction included, and a safety briefing before each water entry. If you require special assistance or have mobility questions contact the operator ahead of time so staff can accommodate your needs and streamline boarding seamlessly.
moderate.
4 hours.
Comfortable standing and basic swimming ability required; suitable for families with confident swimmers.
Meet at the dock behind Bluegreen Vacations, 1688 Overseas Highway; check in at the office at the top of the dock 30 minutes before departure.
Yes—masks, snorkels, fins and floatation vests are included, plus instruction and a safety briefing before entry.
Non-swimmers must remain on the boat; all snorkelers are required to be able to swim independently and wear a snorkel vest.
Full-face masks are not permitted on snorkel trips to ensure safety and proper snorkel technique.
Full refund if canceled at least 24 hours before departure; weather cancellations are refunded or rescheduled.
The dock area is stroller- and wheelchair-accessible and service animals are allowed, but contact the operator ahead of time for specific accommodations.
Sombrero Reef lies within the Florida Keys National Marine Sanctuary, a protected area established in 1990 to conserve reef ecosystems and cultural resources.
This reef and sandbar are sensitive; use reef-safe sunscreen, avoid touching or standing on coral, and follow guide instructions to minimize impact.
Marathon Mermaid is a Marathon, Florida-based boat tour operator featured on The Adventure Collective. The business offers two signature experiences that highlight the marine scenery and history of the Middle Keys. The Sandbar Adventure is a four-hour experience that transports guests to a local Marathon sandbar for a scenic cruise, floating in crystal-clear waters, and active options such as kayaking or paddle boarding. Light snacks and water activities are included, providing a balance of relaxation and gentle recreation in a tropical setting. The Sunset Cruise is an evening outing aboard the Marathon Mermaid designed to showcase Keys sunsets over Boot Key Harbor and the 7 Mile Bridge. The cruise features champagne, music, and guided commentary on Marathon’s local history, creating a memorable evening for photographers and visitors seeking a scenic sunset experience. Marathon Mermaid’s itineraries focus on accessible shorelines and iconic local landmarks in Marathon, Florida. Trips depart from Marathon and emphasize time on the water, scenic photo opportunities, and relaxed pacing that suits a range of guests. The company’s presence on The Adventure Collective helps travelers discover the Sandbar Adventure and Sunset Cruise when planning Florida Keys activities. For visitors to Marathon seeking boat-based recreation or sunset viewing, Marathon Mermaid offers two clearly described options that combine sightseeing, light refreshments, and water activities in the natural surroundings of the Middle Keys.
Book with Marathon Mermaid