
Three Islets
Mergui Archipelago · Myanmar
Three small limestone karst outcrops rising from the sea in the central Mergui Archipelago, each ringed by submerged ledges, caves, and coral gardens between 5 m and 30 m. The shallow walls are encrusted with enormous sea fans and branching wire corals, while nurse sharks pack the caverns under the overhangs. Schools of batfish and trevally rotate around the pinnacles on the current, and seasonal visits from whale sharks make this one of the archipelago's most well-rounded sites for intermediate divers willing to make the liveaboard journey.
Conditions
Depth
5 to 30 m
Open water and up
Current
Often strong
Can pick up on the edge
Visibility
5 to 10 m
Clearest in the calm season
Water
26 to 30°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 26 | 26 | 27 |
| Vis (m) | 20 | 18 | 12 | 10 | 8 | 5 | 5 | 5 | 5 | 10 | 18 | 20 |
| Current | Gentle | Gentle | Moderate | Moderate | Moderate | Strong | Strong | Strong | Strong | Moderate | Gentle | Gentle |
Your chances of seeing each animal
Nurse Shark
Expected
Known here, not yet in recent logs
Giant Sea Fan
Expected
Known here, not yet in recent logs
Golden Trevally
Expected
Known here, not yet in recent logs
Round Batfish
Expected
Known here, not yet in recent logs
Wire Coral
Expected
Known here, not yet in recent logs
Bluefin Trevally
Expected
Known here, not yet in recent logs
Longface Emperor
Expected
Known here, not yet in recent logs
Whale Shark
Expected
Known here, not yet in recent logs
Gear