Crayfish Cave - Mergui Archipelago

Dropping down at Crayfish Cave, you'll find the entrance to a swim-through arch around 22 metres. It’s not a huge cave system, more of a deep archway, but it does get dark enough inside that we'd suggest bringing a torch to properly appreciate the colours. Look for the colourful sponges, lazy lobsters, and yes, plenty of crayfish tucked into the crevices. On the way out, you’ll likely meet a friendly school of striped snapper hanging around the exit, and the seafans wave gently in the current. It’s a straightforward dive, good for anyone comfortable in enclosed spaces, offering a nice change of pace from the outer reef.

Location
Mergui Archipelago, Myanmar, Southeast Asia
Coordinates
9.000000, 97.750000
Type
cave
Maximum Depth
22m+

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 Crayfish Cave

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 Crayfish Cave

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