Crystal Dive Koh Tao

Crystal Dive is a beachfront dive resort on Koh Tao that has taught diving on the island for more than 25 years. It runs over 45 SSI courses, from first-time diver programmes to professional training.

Specialties include Deep Diving, Independent Diving, Shark Ecology and Coral Restoration, and the centre works with conservation partners such as Coral Tribe, SSI Blue Oceans, Green Fins Thailand and the Department of Marine and Coastal Resources. Two custom-built boats take divers out, and training uses air-conditioned classrooms and two swimming pools.

The resort offers a range of rooms, with discounts on days spent diving, and has a beach bar. It was rated 4.9 from about 1,600 Google reviews in November 2026.