Overview
Belize is home to the second-largest barrier reef in the world — the Belize Barrier Reef Reserve System, a UNESCO World Heritage Site. Stretching 300 kilometres along the coast, it protects a labyrinth of lagoons, cayes, and atolls that offer some of the most diverse diving in the Western Hemisphere.
The Great Blue Hole, a 300-metre-wide, 125-metre-deep marine sinkhole located at the centre of Lighthouse Reef Atoll, is Belize's most iconic dive. Made famous by Jacques Cousteau in 1971, it remains one of the world's great bucket-list dives — stalactites, sharks, and an eerie blue void.
Beyond the Blue Hole, Belize offers three offshore atolls (Lighthouse Reef, Turneffe Atoll, and Glover's Reef), each with distinct character. Turneffe is the largest and most biodiverse; Glover's Reef is the most remote and pristine. The barrier reef itself offers hundreds of sites from beginner-friendly shallows to dramatic walls.
Quick Facts
- LocationCentral America coast
- Reef SystemUNESCO World Heritage
- Dive Sites94 profiled
- Blue Hole Depth125m / 410ft
- CertificationAdvanced for Blue Hole
- Best ForAtolls, walls, sharks
- Operators5 vetted
- Liveaboards3 operating
Top Dive Sites
The Great Blue Hole
The world's most famous dive site. Descend through the thermocline into a cathedral of stalactites formed 10,000 years ago. Caribbean reef sharks and bull sharks patrol the depths.
Half Moon Caye Wall
Adjacent to the Blue Hole, this wall dive is often considered the better dive. Pristine coral, exceptional visibility, and a dramatic drop-off teeming with life.
Turneffe Elbow
The southern tip of Turneffe Atoll where currents converge, creating a feeding frenzy of fish. One of the best shark dives in Belize with regular reef and nurse shark sightings.
Glover's Reef — Long Caye Wall
Remote, pristine wall diving at Belize's most isolated atoll. The coral here is among the healthiest in the Caribbean, with minimal diver impact.
Shark Ray Alley
A shallow sandbar near Caye Caulker where nurse sharks and southern stingrays congregate. Originally a fish cleaning station, it's now one of Belize's most popular snorkel/dive sites.
Mexico Rocks
A shallow patch reef system near San Pedro, perfect for beginners and snorkelers. Excellent coral coverage, abundant reef fish, and regular turtle sightings.
What You'll Encounter
Dive Safety Reminder
The Great Blue Hole requires Advanced Open Water certification and is a deep dive to 40m. Decompression sickness risk is real — follow your dive computer and ascent rates strictly. Liveaboard trips to the atolls require advance planning; conditions can change quickly.
Dive Operators in Belize
4 personally vetted operators — evaluated for safety, expertise, and environmental practices.
Turneffe Flats
Remote resort on Turneffe Atoll offering exclusive access to the Elbow and surrounding sites. All-inclusive packages with expert guides and small groups. The best shark diving in Belize.
Belize Aggressor
The premier liveaboard for the Great Blue Hole and Lighthouse Reef. 7-night itineraries covering all three atolls. Up to 5 dives per day with expert naturalist guides.
Ambergris Divers
San Pedro's most established dive operator with daily trips to the barrier reef, Hol Chan Marine Reserve, and Shark Ray Alley. PADI courses from beginner to instructor.
Glover's Atoll Resort
Remote eco-resort on Glover's Reef Atoll — the most pristine and isolated diving in Belize. Basic but authentic, with extraordinary reef health and minimal diver impact.
Ready to Dive Belize?
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