Three Islets - Mergui Archipelago

Three Islets in the Mergui offers a bit of everything, making it a solid choice for a day’s diving. The main draw is a sizable cave system, where we often spot nurse sharks tucked away in the shadows; if you’re lucky, a grey reef shark might cruise past the entrance. For those who prefer a slower pace, the north-east side has a gentler current and is a good spot for searching out smaller critters like ghost pipefish and seahorses. We’ve also seen plenty of fantail rays here, blending into the sandy patches, alongside healthy numbers of reef fish. It’s a good all-rounder, enjoyable for most experience levels.

Location
Mergui Archipelago, Myanmar, Southeast Asia
Coordinates
9.783300, 97.850000

Best Time to Dive in Mergui Archipelago

The warmest water temperatures in Mergui Archipelago occur in May, averaging 30.8°C. The coolest conditions are in January at 28.5°C.

Monthly Water Temperatures

  • January: 28.5°C
  • February: 28.9°C
  • March: 29.6°C
  • April: 30.7°C
  • May: 30.8°C
  • June: 29.9°C
  • July: 29.5°C
  • August: 29.2°C
  • September: 28.9°C
  • October: 29.0°C
  • November: 29.2°C
  • December: 28.7°C

Nearby Dive Sites in Mergui Archipelago

Nearest Dive Centres to Three Islets

Marine Life in Mergui Archipelago

Home to 173 recorded species including 106 reef fish, 49 hard corals, 8 seagrass & algae, 3 sharks & rays, 2 other, 2 octopus & squid.

Notable Species

Recommended Packing List for Three Islets

Based on average water temperature of 29.4°C, currents 7 cm/s.

  • Shorty or Rashguard - warm 29°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories