Half Moon Caye

An island and a living reef

Half Moon Caye combines a 41.5-acre sand-and-coral-rubble island with roughly 9,727 acres of marine habitat. The reef wall descends into deep water, and the island’s littoral forest represents one of Belize’s most threatened ecosystems. The site is part of the Belize Barrier Reef Reserve System World Heritage Site.

Its non-extractive marine habitat helps replenish fish, lobster and conch populations in Lighthouse Reef. An elbow in the reef wall creates conditions for an important fish spawning aggregation. Visitors help protect these benefits by following ranger instructions and respecting protected-area restrictions.

The seabird colony includes white-phase red-footed boobies and magnificent frigatebirds, alongside visiting migratory birds. Loggerhead, green and hawksbill turtles have nested on the southeast-facing beach. White sand, coastal forest and reef life make the island more than a between-dives stop.

Five dive sites to discuss with your operator

Half Moon Caye Wall: a dramatic reef edge, valued for its varied corals and fish. BAS describes the atoll wall dropping more than 3,000 feet into deeper water; that is the landscape’s depth, not a suggested diving depth.

Angelfish Wall: named for gray angelfish, with parrotfish, horse-eye jacks, eagle rays and occasional sharks among the life described by BAS. Elkhorn Forest: shallow reef south of the western beach, where elkhorn and lettuce corals provide habitat for colorful fishes.

Tarpon Caves: reef ledges and notches with tube and barrel sponges, black coral, groupers, garden eels, stingrays and tarpon. BAS describes shallow sections at 30–50 feet and wall sections at 60–130 feet; choose a profile with your operator that matches your certification and conditions.

Eagle Landing: the atoll’s southeastern tip combines shallower reef, conch and stingrays over sand with a steep wall beyond the coral ridge. BAS describes underwater interpretation signs here; ask your operator about their current condition and the day’s route.

A long history of care

The nesting colony first received protection as a Crown Reserve in 1928. Conservation work between 1973 and 1979 secured more of the island. Natural-monument status followed in 1982 under Statutory Instrument 30, protecting the island and marine surroundings for conservation, research, education and tourism.

Approximately 55 miles east of Belize City, the island supports rangers and researchers managing both marine monuments. Visitors can use the visitor centre, picnic areas, bathrooms and dock; camping and dive-site moorings require current arrangements with BAS. The official page directs visitors to the BAS library for the Blue Hole and Half Moon Caye Best Practices Booklet.