Crystal Dive Koh Tao

Crystal Dive Koh Tao has been teaching diving on Koh Tao for over 25 years—we’re one of the originals.

Our beachfront dive resort is one of the best places for SSI dive courses on Koh Tao, and our SSI Diamond Instructor Training Centre is led by some of the most experienced SCUBA trainers in Southeast Asia.

Learn to dive on Koh Tao with Crystal!

Why Choose Crystal Dive Koh Tao?

We are proud to have been a leader in safe yet fun SCUBA training for over 25 years. With over 100,000 divers trained, we believe our standards speak for themselves.

At Crystal Dive, we teach 45+ SSI dive courses from our beachfront dive resort so that your SCUBA skills have room to grow in whatever direction you want. With specialty courses like Independent Diving, Shark Ecology and Coral Restoration, and pro-level courses like the SSI Instructor Training Course, Crystal Dive Koh Tao can help you take your diving to some unexpected places

Learn to dive on Koh Tao – with Crystal

When it comes to SSI dive courses on Koh Tao, we have everything from beginner-level courses, advanced specialties like Deep Diving and Nitrox, to professional courses to get you working in the dive industry.

BEGINNER DIVING COURSES

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New to diving? Learn to dive on Koh Tao with our SSI beginner courses and take the first steps to experiencing a whole new underwater world.

BASIC DIVER

OPEN WATER CERTIFICATION

SCUBA DIVER

ADVANCED DIVING COURSES

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Already a certified diver? Nab a few SSI specialty courses so that you can dive deeper, dive safer, explore sunken shipwrecks, improve your buoyancy control, and better understand the ecology of the marine world.

ADVANCED ADVENTURER

STRESS & RESCUE COURSE

DEEP DIVING SPECIALTY

ENRICHED AIR NITROX

WRECK DIVING SPECIALTY

PROFESSIONAL DIVING COURSES

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Turn SCUBA diving into a career with our professional-level SSI training courses. As a top Instructor Training Centre on Koh Tao, our instructors will get you started on the right foot in the industry.

DIVEMASTER COURSE

DIVEMASTER LIFESTYLE PACKAGE

INSTRUCTOR COURSE

INSTRUCTOR LIFESTYLE PACKAGE

Award-winning Beachfront Dive Resort

2 Custom Built Dive Boats

2 Swimming Pools

Air Condition Classrooms

Free Wifi

25+ Years Experience

Beach Bar

Accommodation

Discounted Accommodation on Koh Tao

At Crystal Dive Koh Tao, we offer a variety of different accommodation options, many of which feature discounts on the days that you’re diving with us.

See our Accommodations page for our current discounts and stay with us for less!

What People Think About Our SSI Dive Courses on Koh Tao

Crystal Dive Koh Tao

4.9

Based on 1131 reviews

review us on

Connor Mousley

12:52 27 Mar 25

Had the most amazing experience at Crystal ended up staying longer than planned and completing the advanced adventurer course and a couple fun dives, all the staff and other divers were so friendly and helpful made some great friends and memories, the accommodation I had was also really great.Attila was my instructor throughout and he made the experience perfect, he was a great teacher made everything simple and made us feel safe and confident while bringing a lot of humour too he was just an all round legend! Can’t wait to come back one day and do some more diving at Crystal!

Olivia D

14:19 23 Mar 25

I completed my Open Water Diver in January this year and if you plan on doing so too, you should definitely choose Crystal Dive. My instructor Alex was super patient, calming and created a great learning atmosphere. They are 100% focused on the diver’s safety and good experience. Thanks so much and hopefully see you again one day!

brianna Brunner

15:45 10 Mar 25

Got my open and advanced certifications with our instructor, Evan. He was professional, patient & passionate about sharing the sport with us! He was also extremely flexible with our schedule when we needed a break to recover from getting sick mid course. Not only is Crystal highly reputable on the island, it’s also a great value - 20k for both certifications with free accommodation. The rooms were also so nice and great location by the pier.

Emily van Beek

10:48 10 Mar 25

I got my Open Water with the help of Michaella at Crystal Dive! Highly recommended, both the diving school and Michaella herself.

Noah Larsen

05:53 10 Mar 25

Had a really good experience with Crystal Dive Koh Tao. Didn’t have any experience at all and didn’t know what to expect. But our instructor Alexander Gaugusch and co-instructor Darrian made us very comfortable, and really made this an amazing experience. Really good people and teachers.

Lin ZHOU

02:33 09 Mar 25

Did my dm here.Been diving with different dive centers before, crystal is definitely the most professional one from training system to gears maintenance. They teach you how to properly get things done. Open water instructors would literally go through every single skill with you which is really really essential for new divers to get comfortable and enjoy the big blue. Encouraging but not pushing, crystal instructors are authentically happy to see every diver to keep blowing bubbles. Safety is also always at top level of all, oxygen tank and first aid kits, surface cover always ready for rescue and every roll call, good connection with local clinic and hospitals, caring crews and staffs…I’m forever grateful that I walked in crystal office and decided to do my dm here.The two and half month I spent on koh Tao at crystal is crystal precious with my DMC fellows. Special thanks to my mentor Oli who is there always by my side.Good vibe only 🙂

maarten Vandeborne

04:52 07 Mar 25

Best impulsive decision to take the open water course! In a group of 3 we were teached by the amazing Vera. Over 3 days we learned almost all the essential basics because of great teaching and support of the digital SSI(divers association) platform. First session in Crystal’s own private swimingpool (4m) and the next day we were out to the ocean and already so great sea life! Amazing overal experience with the best teacher (for low price and even free accomodation which is not 5 star but still really nice 😊) 👌👌

Onnicha K.

10:14 05 Mar 25

I completed a 3-day Open Water course with Kelvin Kyaw, and he’s by far the best scuba instructor! He was incredibly understanding and compassionate when I felt panicky, and his exceptional problem-solving skills and helpful tips helped me overcome my fear and complete the course smoothly. I highly recommend him to anyone looking to try scuba diving—Kelvin is a truly trustworthy instructor!

Sindoor Maheshwari

12:41 04 Mar 25

Tried the basic ride with Crystal Dive. My instructor was Evandro. He was very patient with me during the session. Thought I was unsuccessful in both of my dives, I really appreciate my instructor to try his best. Thankyou.

Julian Staniek

14:06 03 Mar 25

My experience with Crystal Dive Koh Tao was absolutely great! I originally came to the island for a refresher and some fun dives but was immediately convinced that this was the perfect place for my Advanced Open Water course. My instructor Melanie was professional, extremely thorough, knowledgeable and shared many tips for diving and the island. I really enjoyed every single dive and learned so much through her. I especially loved the perfect buoyancy dive and the sail rock dive! I felt very safe and cared for during my entire course. The atmosphere in the team was great, and the instructors clearly sparked the passion for diving of both students and fun divers. I'll surely come back and maybe even complete my Dive Master course with Crystal!

Marine Jonet

13:11 03 Mar 25

Did my basic diver experience with Crystal Koh Tao and very happy that I did it with Kelvin who was amazing, he helped me feel very comfortable and reduce my stress for my first dive ! I felt very safe from start to finish with all the processes and will recommend it to anyone who wants to have a good experience !

F Rameder

01:21 27 Feb 25

Did my advanced open water diver here. Was a very good experience. I really enjoyed the dives with our guides Aex and Trent.

Wancan Sun

10:41 25 Feb 25

Did my SSI divemaster with crystal and really enjoyed the experience. The program was designed in which I got to improve my skill and knowledge in diving, also to experience and learn about teaching diving and interacting with students and real clients. The instructors are very knowledgeable and attentive, they are ready to help you if you have questions. It was also super lovely to be able to meet and spend time with the fellow dive master candidates there, we got to do a lot of fun dives together during our training, many beautiful memories created.

Claire King

05:55 24 Feb 25

Such a fabulous dive centre! My friend and I were well looked after by Alex. He was very professional and thorough. We felt very comfortable, used great equipment and everything was communicated well. Would highly recommend!