Dive site · access from Lighthouse Reef
Great Blue Hole
A near-circular sinkhole 318m across and 124m deep near the centre of Lighthouse Reef.
- Depth
- 0–40m
- Current
- None
- Minimum level
- Advanced open water
- Access
- Boat
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The case for it
Why dive here
- Ancient stalactites on a submerged overhang around 40m (130ft)
- Sparse life; a few Caribbean reef sharks and occasional bull sharks
- Deep, dark, short-bottom-time novelty dive rather than a reef dive
Check before booking
What may rule it out
- Advanced open water certification is the stated minimum.
Access and timing
Plan this through Lighthouse Reef
Best overall months: Mar, Apr, May, Jun. Check the destination planner for operating season, wildlife and other matching sites.
Wildlife
Seen around Lighthouse Reef
rareoccasionalcommonly seenpeak seasondestination closed
These are destination-level records, not confirmed sightings at Great Blue Hole.
Bull shark (Zambezi shark)
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Caribbean reef shark
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Hawksbill turtle
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Nassau grouper
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Great barracuda
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Nearby alternatives
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Sources & last checked
Checked July 2026
Research is source-backed, but conditions and fees should still be confirmed locally.
View 3 sources and checking notes
- Great Blue Hole, Wikipedia
- Great Blue Hole Scuba Diving, Dive The World
- Belize Blue Hole: is it really worth it?, Meet Me In Departures
Note on the data: Coordinates are approximate; not surveyed dive-site GPS.