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Experience snorkeling at Coffin's Patch and relax on the Grassy Key Sandbar with Solé Watersports in Marathon for $139, a 3.5-hour guided tour suitable for proficient swimmers.

The Marathon Coffins Patch Snorkel & Sandbar Tour stands out as an accessible yet adventurous outing in the Middle Keys, priced at $139 per person. With an approximate duration of 3 hours and 30 minutes, it balances underwater exploration with relaxing downtime on the white sandy Grassy Key Sandbar. This experience is perfect for those who want to explore vibrant coral reefs and enjoy a laid-back environment afterward, all led by Solé Watersports — a Florida Mom-owned company recognized as Best in Marathon for 2023 and 2024.
The tour departs from Marathon’s Tarpon Creek Marina at 10:00 am and includes all necessary snorkel gear, floatation devices, water, and iced coolers. Be aware that this tour is best suited for proficient swimmers, given the nature of the conditions and depths involved. It caters to groups of up to 40 participants, making for a lively, yet manageable experience.
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The first stop takes the boat approximately four nautical miles off Key Colony Beach to the Coffin’s Patch Sanctuary, a protected reef area known for its wreckage remains from a Spanish Galleon sank around 1733. The reef lies at 8 to 15 feet depth, making it ideal for snorkelers of moderate skill levels.
This reef offers abundant tropical sea life, including colorful fish, coral formations, and remnants of historical wreckage. Since it’s part of a preservation area, the environment remains relatively undisturbed, providing an authentic glimpse of underwater life. The approximate one-hour snorkeling session allows ample time to observe the corals, wreckage, and diverse marine species.
Weather conditions can influence snorkeling quality, so rougher days might limit visibility. The boat crew is experienced in managing less-than-ideal conditions, adding to the safety and enjoyment of the experience. Snorkel gear, noodles, and floating balls are included to enhance comfort during the underwater exploration.

Following the reef visit, the boat heads to the Grassy Key Sandbar, a shallow, 1 to 4 feet deep area with a pristine white sandy bottom. This stop allows guests to float, swim, or simply soak up the sun in a calm environment.
The floating giant mat, noodles, and beverages are provided, creating a laid-back, fun atmosphere. Many enjoy chilling on the sandbar or lounging on the floating mat, while observing local conch shells, Bahamian starfish, horseshoe crabs, and other shallow-water creatures. The relaxed pace at this stop offers a perfect break from the underwater activity.
Conditions at the sandbar can vary with the weather, but the shallow waters make it accessible for most guests. It’s an ideal spot for families or groups who want to decompress in warm, shallow water with plenty of floating toys and refreshing drinks.

Many reviews highlight the friendly and helpful nature of the Solé Watersports crew, including guides like Chelsea, Jenn, Captain Greg, and Sam. Guests appreciate how the crew explains sea life, handles variable weather, and takes care of everyone, including those who get seasick in rough conditions.
The boats are described as clean, organized, and equipped with restrooms, making the trip comfortable. The crew’s attentiveness is often praised, with multiple mentions of their helpfulness and knowledge, especially when weather conditions are less than perfect.
The snorkeling conditions can fluctuate based on the day, with some reviews noting wind and waves affecting visibility and comfort. However, the crew’s professionalism and effort to maximize enjoyment shine through, whether the weather is calm or challenging.

The tour’s physical demands mean it’s best suited for proficient swimmers comfortable with waves and currents. The snorkeling at Coffins Patch involves deeper water, with depths from 8 to 15 feet, so confidence in the water is important.
Wetsuits are not included but can be requested before the trip, especially on cooler or windier days. Guests are encouraged to bring sun protection, water, and personal snacks if desired, since beverages and snacks are available for purchase at the marina.
The meeting point at Marathon’s Tarpon Creek Marina is straightforward, and the timing at 10:00 am allows for a full, enjoyable day on the water.

Several reviews mention weather variability impacting the snorkeling experience. Windy days can cause rougher water, reducing visibility and making the boat ride less comfortable. The crew does their best to manage conditions, sometimes offering wetsuits or alternative activities.
The tour is canceled for weather that poses safety concerns, with a full refund or rescheduling offered when that happens. Guests are advised to be flexible and prepared for changing conditions, especially during windy or stormy weather.

This snorkel and sandbar combo offers more than just underwater viewing; it combines reef exploration with relaxation on the sandbar, which many find ideal for a half-day outing. The price point of $139 provides good value for all equipment, floatation devices, and refreshments.
While some tours focus solely on reef snorkeling, this experience balances marine life viewing with lazy lounging, making it suitable for a wider range of guests, including families and those looking for a casual day on the water.

The tour’s highlight is the combination of reef snorkeling at Coffins Patch and relaxing on the shallow sandbar, both in beautiful settings. The crew’s professionalism and friendly attitude contribute to a comfortable, enjoyable experience, even when conditions are less than perfect.
The protected reef environment and abundant sea life provide a nature-rich adventure, especially for those interested in tropical sea creatures and historical wreckage remains. The relaxed sandbar stop adds a laid-back dimension, perfect for unwinding and soaking up sunshine.
The tour is ideal for proficient swimmers who enjoy moderate water depths and shallow areas, with all necessary gear included to maximize convenience. Its moderate length makes it suitable for visitors with limited time but still seeking a quality watersports experience.
While the snorkeling conditions are generally good, weather fluctuations can affect visibility and comfort. Guests should manage expectations on windy or stormy days, as snorkel conditions might be challenging.
This tour is not designed for non-swimmers or those who are not confident in open water, due to the moderate swimming proficiency required. It also lacks indoor facilities onboard, so sun protection and personal supplies are recommended.
This $139 tour offers a well-rounded experience that combines lively reef snorkeling with relaxing time on a shallow sandbar. Many reviews praise the friendly crew, clean boats, and beautiful scenery. The snorkeling at Coffins Patch delivers historical wreckage and vibrant sea life, appealing to those eager to explore undersea treasures.
The sandbar stop provides the perfect chill-out zone, with float toys and refreshing beverages adding to the fun. While weather conditions can influence the experience, the crew’s professionalism ensures safety and enjoyment in all circumstances.
This tour suits proficient swimmers looking for a moderate-length adventure that balances active snorkeling with leisurely lounging. It offers great value for those who want diverse water activities in the beautiful Marathon area.
“Wonderful boat ride! Snorkeling conditions were a little rough. However, the captain took us for a nice little cruise when everyone was finished s…”
Is this tour suitable for children or non-swimmers?
This tour is best for proficient swimmers, as snorkeling at Coffins Patch involves moderate water depths and variable conditions. Non-swimmers might find the reef snorkeling challenging but can enjoy the shallow sandbar.
What should I bring for the trip?
Guests should bring sun protection, personal snacks, and any personal items needed for comfort. Wetsuits can be requested before the trip, especially on cooler or windy days.
How long is the tour and what does it include?
The tour lasts approximately 3 hours and 30 minutes, covering snorkeling at Coffins Patch and relaxing at the sandbar. All snorkel gear, floatation devices, water, and iced coolers are included.
What is the weather policy?
The tour may be canceled if weather conditions are unsafe, with a full refund or rescheduling offered. Guests are encouraged to be flexible with weather-dependent plans.
Can I book this tour if I have limited mobility?
The tour involves water activity and walking on the boat, so participants should have moderate physical fitness and be comfortable with water and weather fluctuations.
Where does the tour start and end?
It departs from Marathon’s Tarpon Creek Marina at 10:00 am and returns to the same location after the scheduled stops.