Dive-site story
Rising vertically out of the Andaman Sea between Phuket and the Phi Phi Islands, Koh Doc Mai is a limestone monolith famed for wall and macro diving. The eastern flank features sheer drop-offs covered in dense clusters of yellow tube corals and expansive gorgonian sea fans, alongside two cavern openings that can be explored near the base. Divers drift along the dramatic rock face, peering into crevices where critters shelter from passing tidal currents.
Sheer limestone wall carpeted with bright yellow tube corals and seafans
Two distinct undercut cavern openings accessible along the east face
Exceptional macro life hidden throughout crevices and soft coral overhangs
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Calmest seas and peak visibility run during the northeast monsoon.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tigertail SeahorseHippocampus comes | Common | ||||||||||||
| Ornate Ghost PipefishSolenostomus paradoxus | Common | ||||||||||||
| Zebra SharkStegostoma tigrinum | Seasonal | ||||||||||||
| Harlequin ShrimpHymenocera picta | Common | ||||||||||||
| Yellowmargin MorayGymnothorax flavimarginatus | Common |
Marine forecast
