Dive-site story
South Reef extends along the southern flank of Koh Tachai, offering a more sheltered alternative to the island's exposed northern pinnacle. Sloping fields of hard coral give way to scattered granite boulders and a sandy floor where bottom-dwelling species rest. Currents sweep past the southern tip, attracting pelagic fish to hunt along the reef edge.
Leopard sharks resting on open sand patches along the reef base
Expansive coral slopes populated by schooling snappers and fusiliers
Passing pelagics including giant trevally and hunting barracuda along the current line
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Access is restricted during the southwest monsoon when Mu Ko Similan and Surin National Parks close.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zebra SharkStegostoma tigrinum | Common | ||||||||||||
| Giant TrevallyCaranx ignobilis | Common | ||||||||||||
| Hawksbill TurtleEretmochelys imbricata | Common | ||||||||||||
| Reef Manta RayMobula alfredi | Seasonal | ||||||||||||
| Bluespotted Ribbontail RayTaeniura lymma | Common |
Marine forecast
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