Dive-site story
Situated off the northwest tip of Koh Nang Yuan, Green Rock consists of large submerged granite boulders stacked into a labyrinth of swim-throughs, arches, and overhangs. The rock structure emerges just beneath the surface and drops into a sandy seabed scattered with coral outcrops. The northern sandy plateau features a well-known nesting area for triggerfish, where territorial behavior is common during breeding periods.
Extensive network of boulder swim-throughs, caverns, and deep crevices
Active triggerfish nesting territory located in the surrounding sand flats
Frequent encounters with sea snakes hunting along the boulder foundations
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Calm seas and peak visibility run from spring through late summer. The November monsoon typically brings rough conditions and heavy rain.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Titan triggerfishBalistoides viridescens | Common | ||||||||||||
| Yellowmargin triggerfishPseudobalistes flavimarginatus | Common | ||||||||||||
| Chevron barracudaSphyraena qenie | Common | ||||||||||||
| Banded sea kraitLaticauda colubrina | Common | ||||||||||||
| Hawksbill turtleEretmochelys imbricata | Common | ||||||||||||
| Bluespotted ribbontail rayTaeniura lymma | Common |
Marine forecast
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