Crystal Dive is one of the most established dive centers on Koh Tao with over 25 years of experience training more than 100,000 divers. Located right on Mae Haad Beach, Crystal Dive is known for personal and professional diver training with comprehensive course options from Open Water to Instructor level.

The center has received numerous awards for contributions towards safety in diver training, marine conservation, and customer service. It offers a full range of PADI courses along with free diving and technical diving specialties. The center emphasizes quality instruction, eco-friendly practices, and personalized attention with small group sizes.