KOH HA DIVE SITES
5 Islands

Koh Ha is a group of five small Islands 25 kilometres west of Koh Lanta. The islands are separated by channels over 50 metres deep. This group of dive sites is renowned for good visibility, thrilling caves and swim-throughs, and frequent Whale Sharks!

DIVE SITE 1 - Emerald Cave:

The highlight of diving here is a series of caves, or caverns on the largest of the islands, Koh Ha Yai. The emerald light filtering through the cave entrance at sunrise is quite magical. The caves are safe to enter, even without a light, as the entrances to the first caves are large. You can surface inside the caves and see stalactites hanging down from the ceiling above.

If you enjoy swim-throughs then try the one on the wall slightly to the right of the main (right-hand) entrance. Dive through the tiny entrance, then vertically downwards. Make a sharp left, and squeeze out the exit point. Hey presto, you're back in the main cave chamber!

Please beware that cave diving requires special training beyond the scope of recreational diving. Penetration into the passageway at the rear of the main chamber is dangerous and is not recommended.

DIVE SITE 2 - The Chimney

The swim through on this dive site is fantastic. A small hole in the rocky floor about 1.5 metres in diameter on only 5 metres which takes you down through a narrow tunnel to an exit point at 16 metres. This swim through branches off into caves which are not safe! Be sure to dive these sites with a locally experienced Dive Master with a safety line to guide the way through to the exit point.