The 12+ dive sites at Ko Haa offer beautiful scuba diving and snorkelling with spectacular visibility. Diving at Ko Haa is suitable for divers and snorkellers of all levels. Ko Haa’s scuba diving highlights include The Lagoon, The Cathedral and The Chimney. There are also underwater pinnacles, drop-offs, walls, bolders and other caverns, inter-connected chambers and swim-throughs to explore.

Ko Haa, which means ‘Five Islands’ in Thai, has a central lagoon area that is ideal for beginner divers. It offers a safe and relaxed starting point for you to take your first underwater breaths and there are some extremely friendly little Porcupine Puffer Fish, ready to make your acquaintance in the large, sandy bay area. The bay slopes gently onto the reef allowing you to progress into your first dive effortlessly.

Ko Haa’s central lagoon area is a must-see for any diver or snorkeller visiting Ko Lanta. The crystal-clear waters make for an Underwater Photographer’s paradise and the wealth of marine life is sure to delight every visitor.

The lagoon is home to beautiful reefscapes, a beautiful large table coral covered in nervous humbug fish & many colourful reef fish such as Porkie, the resident & very curious Porcupine Pufferfish, Clownfish (aka Nemo), Lionfish, Scorpionfish, Snapper, Barracuda & even Turtles. Due to its shallow waters and calm conditions, this site is a photographers dream and is one of the best sites in the area for finding macro delights such as Ornate Ghost Pipefish & Harlequin Shrimps.

The marine life that can be found at Ko Haa varies from Tigertail Seahorses measuring only a few centimetres, to an abundance of Octopus hiding amongst the rocks and crevices. A Hawksbill Turtle is often seen swimming amongst the pristine coral. Manta Rays, Marble Rays, Eagle Rays and even Whale Sharks are spotted here occasionally.
You can’t predict exactly what you’ll see, but it’s always a pleasant and rewarding surprise!

One of Ko Haa’s highlights is the series of caverns and swim-throughs. The largest cavern has three chambers and is known as The Cathedral. The first two chambers are connected by a shallow swim through at about 9 metres. It is possible to surface inside the Cathedral and see the limestone stalactites looming from the high ceilings.

Ko Haa Island #1 (Ko Haa Nung) has the famous Chimney Cavern system and other systems to explore. You can find Banded Sea Kraits, Lionfish, Nudibranches, Frogfish, beautiful Tiger Cowries and many other Crustaceans and small critters.

The crystal-clear waters and consistent visibility of 25m+ make Ko Haa an un-forgettable scuba diving and snorkelling destination.

Contact Scubafish Dive Centre:

for further information or to find out about prices and schedules