The 5 Best Dive Schools in Koh Tao, Thailand

Big Blue is firmly among the longest-running establishments on the island, and during its tenure has branded itself as one of the most reputable programs around. With regularly packed boats, divers are guaranteed introduction to a huge family of new friends with each new dive, under the guidance of some of the most experienced dive professionals on the island. Its dive master trainee program is among the largest, making it a great choice for those thinking about staying island-bound longer term. The centre offers both PADI and SSI training options. Big Blue also has active conservation activities with plenty of options for visitors to learn more about marine biology and the centre’s eco efforts. Then there’s the freediving centre, in case you’re keen to check out the underwater world without the tank, and technical dive training, to sink even deeper into your scuba training.

This fun-loving shop specializes in small groups and personalized experiences. Its fleet includes two speedboats, which makes for extra-flexible schedule options that allow for a bit more sleep in the morning (for those who gawk at the 6am wake-up calls common among many centres) and easy access to more niche dive sites not always visited by bigger schools on stricter schedules. Goodtime’s diving operations merge seamlessly into its wide range of other activities, including rock climbing, abseiling, cliff jumping, booze cruising, and even flying trapeze, and its divers enjoy discounts on the lot. Short on time or want to test the waters before signing up for an open water certification course? Goodtime Adventures is also one of the only shops that offer a half-day “try dive” experience in both the morning and afternoon to accommodate any schedule.

Another well-established centre, Sairee Cottage offers a spectrum of PADI courses, but what sets it apart is has a dedicated fun dive boat for certified divers, making cruising directly to Koh Tao’s premier dive sites a breeze. For those who are a bit nervous about taking the plunge, this centre is also among the few that conduct the first portion of its “try dive” program in the swimming pool rather in the ocean to build your confidence before taking on the open water. For photo-enthusiasts, the resort also has one of the top underwater photography trainers on the island in its staff. Sairee Cottage boasts impressive facilities as well. Its gorgeous beachfront resort includes plenty of accommodation, two saltwater pools, a swim-up bar, and great classrooms for training programs.

This private centre is all about personal customization. Dives are organized as private charters and scheduled based on the best times to visit popular dive sites – when no other boats are there. If you’re taking a course, their professional staff will come to teach you at your accommodation for the ultimate ease and flexibility, and they can adjust schedules based on your time requirements and preference. The owner is also a well-respected underwater photographer, happy to customise photography training based on individual goals.