Descend to the recreational limit at the Great Blue Hole, snorkel the rim, and enjoy lunch on Half Moon Caye on this full-day dive run from Ambergris Caye. Ideal for advanced divers seeking a deep, historical sinkhole experience and snorkelers who want a taste of the atoll’s reefs.
Descend to the recreational limit at the Great Blue Hole, snorkel the rim, and enjoy lunch on Half Moon Caye on this full-day dive run from Ambergris Caye. Ideal for advanced divers seeking a deep, historical sinkhole experience and snorkelers who want a taste of the atoll’s reefs.
The boat slips away from Ramon's dock before the sun fully wakes, and the sea opens up like a dark throat daring you forward.
By midmorning you hover over a circular sinkhole — the Great Blue Hole — its rim a pale ring of coral and its center a deep, calm void that holds a cold, silent history.
Verified experiences and guided adventures in the surrounding area.
Operated by ReinMark Tours · San Pedro, Belize District
The boat slips away from Ramon's dock before the sun fully wakes, and the sea opens up like a dark throat daring you forward.
By midmorning you hover over a circular sinkhole — the Great Blue Hole — its rim a pale ring of coral and its center a deep, calm void that holds a cold, silent history.
Geology and history are plain here: the Blue Hole is a collapsed Pleistocene limestone cave that flooded as sea levels rose, later mapped and popularized by Jacques Cousteau in the 1970s.
You’ll move between three iconic sites — the blue hole’s deep drop, the bird-swept Half Moon Caye for lunch and land wildlife, and the Aquarium’s coral bommies for a final dive or snorkel.
Expect clear blue water, strong thermoclines at depth, and visibility that can exceed 100 feet on calm days; currents can pick up and the dive to 130 feet sits at the recreational limit, so training and conservative air management are essential.
Half Moon Caye offers a chance to stretch legs, see red-footed boobies and classic atoll vegetation, and eat a Belizean-style lunch on the dock before the last shallow reef dive.
Practical guidance: arrive with a certified deep-diver plan, check your dive computer and redundant air options, and carry reef-safe sunscreen and hydration for the long boat day (roughly 10 hours). Boat transfers from Ambergris Caye take about two hours each way, so factor sea conditions into your schedule and expect a full, committed day on the water.
challenging.
10 hours.
Moderate to fit — divers should be comfortable with long boat days and deep dives; snorkelers need basic swim fitness.
Yes — the deep dive to roughly 130 feet requires Advanced Open Water or equivalent training and experience in deep dives; snorkelers can visit the rim without certification.
Expect about two hours each way from Ramon's dock to the Blue Hole, depending on sea conditions and vessel speed.
Common sightings include reef fish, hawksbill and green turtles, nurse or reef sharks near the rim, and seabirds on Half Moon Caye such as red-footed boobies.
Yes — a Belizean-style lunch and breakfast are included and typically served on the dock at Half Moon Caye between dives.
The Blue Hole formed as a limestone cave system during lower sea levels and was explored and popularized by Jacques Cousteau in 1971, spurring global interest.
The site lies within the Belize Barrier Reef Reserve System; practice reef-safe sunscreen use and follow operator briefings to minimize contact and anchor damage.
ReinMark Tours operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




The boat slips away from Ramon's dock before the sun fully wakes, and the sea opens up like a dark throat daring you forward.
By midmorning you hover over a circular sinkhole — the Great Blue Hole — its rim a pale ring of coral and its center a deep, calm void that holds a cold, silent history.
The boat slips away from Ramon's dock before the sun fully wakes, and the sea opens up like a dark throat daring you forward.
By midmorning you hover over a circular sinkhole — the Great Blue Hole — its rim a pale ring of coral and its center a deep, calm void that holds a cold, silent history.
Geology and history are plain here: the Blue Hole is a collapsed Pleistocene limestone cave that flooded as sea levels rose, later mapped and popularized by Jacques Cousteau in the 1970s.
You’ll move between three iconic sites — the blue hole’s deep drop, the bird-swept Half Moon Caye for lunch and land wildlife, and the Aquarium’s coral bommies for a final dive or snorkel.
Expect clear blue water, strong thermoclines at depth, and visibility that can exceed 100 feet on calm days; currents can pick up and the dive to 130 feet sits at the recreational limit, so training and conservative air management are essential.
Half Moon Caye offers a chance to stretch legs, see red-footed boobies and classic atoll vegetation, and eat a Belizean-style lunch on the dock before the last shallow reef dive.
Practical guidance: arrive with a certified deep-diver plan, check your dive computer and redundant air options, and carry reef-safe sunscreen and hydration for the long boat day (roughly 10 hours). Boat transfers from Ambergris Caye take about two hours each way, so factor sea conditions into your schedule and expect a full, committed day on the water.