Dive-site story
Koh Haa forms a cluster of five limestone islets within Mu Ko Lanta National Marine Park. Underwater, towering karst walls give way to a central sheltered lagoon, swim-throughs, and extensive cavern systems such as The Cathedral, where divers can surface inside an air chamber illuminated by ambient green and turquoise light.
The Cathedral, a series of expansive limestone caverns with light filtering through overhead openings
The Chimney swim-through featuring vertical ascents through coral-encrusted rock fissures
Sheltered shallow lagoon with hard coral gardens and macro critters
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
The marine national park is strictly open to divers during the dry northeast monsoon season and closes annually during the monsoon.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hawksbill Sea TurtleEretmochelys imbricata | Common | ||||||||||||
| Banded Sea KraitLaticauda colubrina | Common | ||||||||||||
| Ornate Ghost PipefishSolenostomus paradoxus | Seasonal | ||||||||||||
| Blacktip Reef SharkCarcharhinus melanopterus | Common | ||||||||||||
| Reef Manta RayMobula alfredi | Rare |
Marine forecast
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