Welcome to Crystal Dive

With us you are in good hands for your holiday in paradise.

Come and join the fun in diving

We offer PADI courses from Beginner to Instructor & daily dive trips.


Crystal Dive offers first class dive activities for over 25 years

Crystal Dive Swimming pool Padi Flag Koh Tao Thailand

Come and Join the Fun on koh tao

Award Winning PADI 5 Star CDC (Career Development Centre)

If you are looking for personal, yet professional diver training with all options, look no further. Here at Crystal Dive we are proud to be leading the way in safe & personal scuba diver training for over 25 years.

With more than 100,000 divers trained in the safe, tropical waters of Koh Tao in Thailand you can fully trust in our experience and knowledge, which is reflected in the numerous awards we received for our contribution towards safety in diver training, marine conservation & customer service.

Come and join us to start or continue your scuba adventure!

Our most popular courses

PADI Open Water Course diver jump in swimming pool

Open Water Course

The World’s most popular course. Get a Certification & dive to 18 metres – in just 3-4 days you can be a fully qualified diver!

PADI Advanced Diver course happy divers on the boat

Advanced Open Water

In just 2 days you will be a PADI Advanced Open Water Diver, giving you a lot of benefits and expanding your underwater experiences.

PADI Nitrox Diver course Crystal 3 dive boat and diver on surface

Enriched Air (NITROX)

In just a day or even half a day you will learn the safe diving practices and can turn yourself into a fully qualified PADI Enriched Air Diver.


Instructor Course (IDC)

In the PADI Instructor Development Course (IDC) you learn the art of teaching divers of all levels from beginner to divemaster.

Discover Scuba Diving

A one day introductory program giving you the chance to use a full set of SCUBA equipment and take an ocean dive from one of our dive boats.

Scuba Diver Course

Short on time? Get the Scuba Diver Certification & dive to 12 metres with a Pro – in just 2 days you can be a qualified diver!

Open Water Course

The World’s most popular course. Get a Certification & dive to 18 metres – in just 3-4 days you can be a fully qualified diver!

Open Water E-Learning

Spend less time in a classroom and more time doing what you like: diving by completing theory online, ready for when you arrive.

Adventure Diver Course

Take 3 dives in just one day to reach the Adventure Diver status making it the perfect choice if you are short on time on Koh Tao.

Advanced Open Water

In just 2 days you will be a PADI Advanced Open Water Diver, giving you a lot of benefits and expanding your underwater experiences.

Rescue Diver Course

Gain techniques through theory, skill practice & scenario sessions to handle possible emergencies you may experience in your scuba life.

Marine Conservation

Join The Coral Tribe to start learning about protecting the ocean and its inhabitants for our future generations to enjoy and benefit.

Deep Specialist Course

The PADI Deep Diver Specialty Course can be taken in just 2 days and after 4 dives you will be qualified to dive to a maximum of 40 metres depth.

Wreck Specialist Course

In two days you will learn how to explore inside and outside of a Wreck in a safe way within the limits of recreational scuba diving.

Enriched Air Specialist

In just a day or even half a day you will learn the safe diving practices and can turn yourself into a fully qualified PADI Enriched Air Diver.

Your Choice…

There is such an extensive range of courses available to become a Specialist in. Find what suits you in your scuba life.

Divemaster Course

The PADI Divemaster-Course is the first professional level course. In this course you learn everything about diving and how to guide certified divers. 

Instructor Course (IDC)

In the PADI Instructor Development Course (IDC) you learn the art of teaching divers of all levels from beginner to divemaster.

Master Scuba Diver Trainer (MSDT)

MSDT learn to teach Specialty Courses and gain teaching experience alongside experienced instructors.

Staff Instructor Course

As a PADI IDC Staff Instructor (IDCS) you are going to be part of the Instructor Development Team and can certify people as Assistant Instructors.


For your course & diving days!
Check Courses for current deals

Explore our newest blog posts

The Evolution Of Dive Equipment

The Evolution Of Dive Equipment

THE EVOLUTION OF DIVE EQUIPMENT By: Bob Murphy, PADI Course Director The Background Story It is by no means a coincidence that we find ourselves scouring the internet for the latest SCUBA regulator...

read more


Crystal Dive Koh Tao
Based on 718 reviews
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Alex BerryAlex Berry
12:21 12 Apr 24
Where do I start! After doing a brief bit of research before flying to Thailand, we decided that we were going to undertake our Open Water Dive certification with Crystal Dive in Koh Toa.I started the course with 2 other friends, however unfortunately for me after day 2 of the course I became ill with a nasty stomach bug and decided to postpone the last 2 days of the Open Water course until my health improved.Crystal Dive were very accommodating with this request and told me that I could complete the course when I felt better.My instructor Tom was just a great guy. After meeting him for the first time I immediately felt safe and confident in his ability to provide fun, safe and focused diving tuition. Due to the fact that I had to postpone my course there was a chance that I would have to finish the last 2 days with a different instructor. After my initial experiencine I decided to wait until I could resume my course with Tom and it was well worth the wait! This was especially important as the whole experience was entirely new for me and I felt a bit nervous to begin with. Initially I struggled mastering the ability to clear my mask of water while beneath the surface. Tom was extremely patient and made sure I was confident with this skill before going to sea.All in all Crystal Dive exceeded my expectations. All the team where great to work with, the facilities and practices were fine tuned and I thoroughly enjoyed completing my Open Water Dive certification with them.Really looking forward to coming back to complete my Advanced Open Water with Tom in the near future!Highly recommend this Dive school to anyone coming to Dive in Koh Toa!
Pigion _lilPigion _lil
11:15 12 Apr 24
had a fantastic experience at the Crystal dive I visited during the Easter break. I completed both my Open Water and Open Water Advanced certifications there. My dive master, Alex, was extremely friendly and explained everything superbly. The atmosphere at the school was incredible. I highly recommend this diving school.
lara h.lara h.
06:04 12 Apr 24
We really enjoyed the Open Water course we did with Alex and Ty, and spontaneously continued with the Advanced course with Alex and Sarah because we fell in love with diving! Our instructors were great, really kind and helpful and we felt safe with them even in adventurous conditions. Thanks for everything✨🌊🤙🏼
Savannah MillsSavannah Mills
12:36 11 Apr 24
Originally we had planned to do the discover scuba diving and potentially the open water based on how the discovery day went. Upon completing the DSD we instantly signed up for the open water course and absolutely loved it. We then signed up for the advanced open water and also loved it! Our instructor Tom was incredibly patient, kind and friendly as well a very thorough teacher. We had him for the DSD, open water, and advanced which provided for an amazing experience! I’d highly recommend Crystal Dive School to anyone who is interested in scuba diving.
Emily GlydeEmily Glyde
12:23 11 Apr 24
We had heard good things about crystal dive through a friend so did the discover scuba dive day we loved it so much we then continued onto our open water and advanced. We had the same instructor throughout, Tom who was super lovely, very patient with us and I couldn’t fault his teaching. We had an amazing time and made lots of friends and I can’t wait to continue diving.
Louise and John SimonsLouise and John Simons
11:33 11 Apr 24
We had a great time diving at Crystal. I had Tom who did my advanced and was great! My wife had big Rich doing her wreck speciality course and she loved him! The accommodation is also well worth it for the discounted price. We will definitely be back!
Stella SmithStella Smith
15:47 10 Apr 24
Just did my PADI open water dive with my instructors Claire and George both were absolutely amazing. I did struggle with my course a little because I was nervous with some of the skills but they both made me feel safe and comfortable and I completed my course. Couldn’t recommend this place anymore very thorough with the skills and made me super confident before I even entered the ocean! Definitely consider Crystal when booking your course they also offer great free accommodation with some courses!!
Jidapa KoomyananthasitJidapa Koomyananthasit
12:31 10 Apr 24
it's so fantastic. All staff are so friendly.
Sim MiSim Mi
16:33 09 Apr 24
Great diving school with an amazing atmosphere and care. As it is quite big you have a real diving Center vibe when you are there. There is also a lot of information and events for sustainable diving which I really appreciated.I did my advanced PADI with Alex and it was a great experience and felt super safe with him so I could learn very well. The dive instructors and masters here are really exceptional.
14:13 09 Apr 24
Well... I can not write everything down. But amazing company, amazing organisation. Apart from that we had bo as instructor. He's purely amazing. His way to teach was just incredible. I really appreciated every single moment in and outside the water.What needs to be mentioned as well is the amazing support of bo's assistant Glenn and Laura. They were for us even more then just assistant. They were a reference for everything. They gave as everytime a very helpful answer to our questions. I felt immediately the improvement byself based on their suggestions. Apart from the diving part those two amazing people were such an enrichment. Eating and talking about diving as well as about other stuff in order to become very good mates in- and outside of the water. Thanks mates 😉
Frank GöringFrank Göring
02:23 08 Apr 24
Travelling through SEA we spontaneously chose Ko Tao for our diving adventure, influenced by positive Google reviews and a recommendation from someone we met in Malaysia who spoke highly of Crystal Dive. Impressed by our experience, I felt compelled to share this review. Neither of us had dived before, so we opted for the Open Water course. Fortunately, we were assigned Hugo and Mathijs as instructors, who both excelled in their roles. Additionally, Elisabetta, who is on her Dive Master journey, accompanied the course, providing ample support with three pairs of eyes for just four participants.During the training in the pool I had some difficulties adjusting to stay under water and to breath out of a can. But thanks to these guys and their special attention I overcame these problems. Once in the ocean, it felt purely natural and amazing!These 3 guys made learning to dive a safe and fun experience!Following the course, we were captivated by diving and decided to pursue the Advanced Open Water certification, once again under Mathijs’s guidance. True to form, he delivered exceptional instruction. Mathijs is not only a skilled instructor but also a great person - dank je wel!Last but not least we did a fun dive with Melissa, who made it a great experience with her infectious passion for the underwater world and all the little things in it!I would recommend everyone to go diving with Crystal Dive! Hope to see you guys again!
Magdalena RietherMagdalena Riether
02:09 08 Apr 24
With no prior experience to diving (not even snorkeling) I decided to do my Open Water at Crystal Dive and it has been a fantastic experience! Our instructors Hugo and Mathijs have guided us through the whole process fantastically, very patiently explaining everything we need to know, always giving me the feeling that we are safe at all times. We have also been accompanied by Elisabetta, in training for her Dive Master, who kept an additional pair of eyes on us, which I really appreciated!I used to think diving is not for me and that I would be afraid all the time but thanks to you guys it turned out that diving is actually a lot of fun - that’s why I also did the Advanced Open Water with Mathjis which really took it to the next level (including a wreck and a night dive). Mathjis even pointed out a sting ray for us which we celebrated a lot!We also had professional pictures taken and these turned out amazing, too, thanks so much!Also, big shout out to Melissa who accompanied us on a Fun Dive and who really brought across her passion for diving and marine life and made the dives so much fun, she even found us an eel which was super cool!5 of 5, would always come back next time I’m on Koh Tao!
david crankdavid crank
06:05 06 Apr 24
Would very much recommend Crystal Divers. Having not dived for over 10 yrs I did a scuba review with Mimi who was very thorough and helped me to remember all the skills that I had forgotten (there were lots). She was very thorough and professional and ensured i was going to be safe and confident to continue diving. Went on to do 4 ocean dives with Mellissa and Attila which were great and thoroughly enjoyed, the highligh being seeing a great barracuda (twice) on one dive. While there my two sons (aged 15 & 13) did an open water course with X who I cannot recommend enough. Brilliant with the boys and so patient, a true star!! Hope to return soon👌
Dominykas ZurlysDominykas Zurlys
04:53 04 Apr 24
Did my PADI wreck penetration and nitrox course with Kelvin. Had a really good time, Kelvin was supportive and made sure to take time to explain stuff. The dive center itself looks professional. The prices are definitely a bit higher than other places, but I think it's worth it!


Award Winning PADI 5 Star Career Development Centre



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