Half Moon Caye Wall

Half Moon Caye Wall is the dive that redeems any Blue Hole skeptic's day. The shelf before the drop is a garden-eel plain — hundreds of slender bodies swaying and vanishing as you glide over — and the lip beyond erupts in tube sponges, sea fans, and plate corals fed by clean oceanic water. Spotted eagle rays patrol the face, turtles bulldoze through the shallows, and groupers loiter at cleaning stations. Topside, the caye's red-footed booby colony wheels overhead during the surface interval. Many Belize regulars quietly rank this above its famous neighbor.

The moment you come for: Garden-eel flats, a sheer sponge-clad wall, eagle rays and turtles, booby colony at the surface interval.

Topography: A white-sand shelf pocked with coral heads, ending at a wall lip that drops sheer into deep blue.

Current: Generally gentle along the wall; more movement on the exposed corner.

Entry: Moored entries over a sandy shelf on Lighthouse Reef's southeast corner, usually paired with the Blue Hole day.

Hazards: Depth temptation over the lip; keep the plan multilevel.

Permits & rules: Natural Monument entrance fee collected with Blue Hole trips.

Conservation: Part of the Half Moon Caye Natural Monument; moorings only, and the caye itself is a protected seabird nesting site.

Nitrox: Worth it here — profiles sit in the range where enriched air meaningfully extends no-stop time (with the training to use it).