diveSphere

Great Blue Hole

Max depth
124 m
Type
Wall
Cert level
Advanced Open Water
Entry
Boat
Current
Low
Visibility
15-30 m
Hazards
Deep profile, nitrogen narcosis risk, overhead-like stalactite features, and remote boat access.
Emergency information

Remote offshore site; operator emergency oxygen, communications, and evacuation plan are essential.

About

About this site

Iconic marine sinkhole at Lighthouse Reef Atoll in the Belize Barrier Reef Reserve System.

Typical depth

40 m

Best season

Dry season and calm-weather windows.

Access and parking

Boat/liveaboard access from Belize operators; typical recreational dives stay far shallower than the full sinkhole depth.

Local regulations

Follow Belize marine protected-area and operator rules.

Location

Where it is

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Media

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Site information is contributed by the community. Always verify conditions locally before diving. Diving can be hazardous — dive within your training and experience.