Crystal Waves Thailand - a PADI 5 Star IDC Center

Ko Haa

The dive sites at Ko Haa offer beautiful scuba diving  with spectacular visibility. Diving at Ko Haa is suitable for divers 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, boulders and other caverns, interconnected chambers and swim-throughs to explore.

Ko Haa, which means ‘Five Islands’ in Thai, has a central lagoon. 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  visiting. 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 reef scapes, 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.

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.