Half Moon Wall

Half Moon Wall at Lighthouse Reef Atoll is one of the Caribbean's definitive wall dives — a sheer vertical drop on the southern edge of Half Moon Caye that plunges into the ocean blue, descending more than 900 meters into the Caribbean abyss. The wall's pristine condition, exceptional visibility, and concentration of large marine life have made it the signature dive of Belize's offshore atolls and a must-visit for wall-diving enthusiasts worldwide. The dive typically begins on the reef top at 8-12 meters, where a healthy coral garden transitions abruptly into the vertical wall. Divers drop to 25-30 meters on the wall face, observing enormous orange elephant-ear sponges, dense black coral forests, and purple tube sponges that can reach two meters in length. The wall is punctuated by overhangs and vertical crevices that shelter Caribbean reef sharks, large groupers, and resident nurse sharks. Marine life is exceptional. Hawksbill and green turtles cruise the wall, eagle rays appear in loose formations, Caribbean reef sharks patrol the deeper sections, and the blue water beyond the wall hosts barracuda schools, bar jacks, and the occasional wahoo or mahi-mahi. Macro enthusiasts will find flamingo tongue snails, arrow crabs, cleaner shrimps, and diverse blennies and gobies on the coral heads. The nearby island itself is a protected seabird sanctuary home to the Caribbean's largest red-footed booby colony. The dive requires Advanced Open Water certification for wall and drift experience. Reached from San Pedro, Caye Caulker, or Belize City (2-3 hours) or via Belize liveaboard itineraries that commonly combine Half Moon Wall with the Great Blue Hole on the same day. Visibility 25-40 meters, water temperatures 26-29°C. Best conditions April through June. Belizean authorities strictly enforce marine park rules here — anchoring is prohibited, moorings must be used, and snorkeler/diver impact is carefully managed.