Reef Explorers
Advanced≤30 m

Green Rock

Dive site in Koh Tao, Thailand

Boulder site with small caves and swim-throughs, triggerfish nests and yellowtail barracuda schools.

Max depth
32 m
Level
Advanced
Best months
Mar–May, Sep–Oct
Current
Strong

The dive

A reef and rock formations dive. Known for barracuda.

Who it's for

Recommended minimum: Advanced (PADI Advanced Open Water, N2).

  • CurrentCurrent can be strong; you need good air management and buoyancy.
  • Low visibilityVisibility can be limited; good navigation helps.
  • Strong current: dive with a local guide and carry a surface marker buoy.
  • The site goes deeper than 30 m: Advanced divers stay above 30 m.

Conditions

Dive type
Reef, Rock formations
Environment
Open water
Water
Sea water

What you might see

  • Barracuda
  • Moray eels
  • Sea snakes

Season in Koh Tao

  • Best
  • Good
  • Possible
  • Closed
  • Not documented yet

Best months: Mar–May, Sep–Oct.

Source: bigbluediving.com

Where is Koh Tao?

View on OpenStreetMapLocation: Ko Tao (Wikipedia)Map: Natural Earth

The point shows the Koh Tao area, not the exact dive site.

About this page

Values marked “Estimated” come from our original catalogue and are being checked against published sources one by one. Sourced values link to where they come from. Conditions change with the season, the weather and the tide: confirm with a local dive centre before you dive.

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Photo credits