Big Blue Diving Courses

Smiling girl with Similan Island back drop

Diving Courses in Thailand

Choose to continue your diving education in Thailand and you are sure to have a fantastic experience. Whether you are a veteran diver, or new to the underwater world of scuba. The Andaman sea is home to all of Thailand’s best dive sites. Continuing your dive education improves your comfort in the water and allows you explore further into the magical waters of the Similan and Surin National Parks.

SSI & Other Agencies

Our patient and experienced instructors can teach diving courses to people of all ages and in a variety of languages. We recommend SSI for our recreational courses. The online learning materials are by far the best on the market.
For more specialised courses, such as extended range, sidemount or advanced nitrox, we can teach using a variety of agencies, depending on what future dive path you are planning.

For more info contact us here.(insert link here)

Similan Liveaboard

How you choose to dive is up to you, but we are on hand to offer advice. Most diving courses can be completed on our Similan Liveaboard. We also offer a number of courses across our Similan day trips.

Tailor make your course schedule with our team. Depending on your course we offer several different options to suit your time frame.

Get in touch now to start planning your next adventure.

Is there a particular area of diving that interests you?

Then look no further, our instructors can teach a wide range of specialities.

Improve skills such as buoyancy, photography or extend your dive experience with a Night or limited Visibility Dive.

Expand your diving skill set with the Advanced Adventurer, Eanx Nitrox Diver, Deep Diving and Sidemount Diver specialities.

Want to take your diving to the next level?

Advanced Nitrox, Decompression Procedures, Advanced Wreck and Extended Range all available with Big Blue. To find out more get in touch with us.


scuba skills update banner

Scuba Skills Update or Refresh.

In the post covid world we find ourselves in many divers haven’t dived in a while. A scuba skills update or scuba review is a great way to refresh your memory and regain the confidence in your skill set.

  • 4-30 dives, not dived within 6 months?
  • 30-100 dives, not dived within 12 months?
  • 100 + dives, not dived within 12-18 months?

Then completing a Scuba Skills Update will be greatly beneficial for your trip.  Whilst not compulsory, we believe that being honest with yourself and possibly refreshing your skills is a good thing. Even experienced divers who haven’t dived for a while, often are surprised by how much they forget.

Complete a Scuba skills update to be 100% ready for your trip.

How does it work?

Starting with a quiz, not a test. This gives us an opportunity to see what you remember, or more importantly what you may have forgotten. This can be done before you arrive in Khao Lak. After this we can talk over some of the key points before heading to our pool and running through the skills.
The skills included are not only important for your safety, but also for your comfort. This is the main reasons we recommend taking the time to complete a skills review or update.
We really believe it allows you to get the best out of your Similan Liveaboard adventure.
If you have any questions regarding the Scuba Skills Update get in touch.

Price only 2200 THB


Advanced Adventurer.

This easy-going course can be spread out over your liveaboard. Continue your diving education by improving your basic dive skills and combining other interests with in diving.
You course contains 5 training dives, including Deep Dive (30m) and Underwater Navigation.

You and your instructor choose the remaining 3 dives from:

  • PerfectBuoyancy
  • Night and Limited Visibility Dive
  • EANx Nitrox
  • Waves, Tides and Currents
  • Search and Recovery
  • Photo and Video
  • Wreck Diving
  • Fish Identification

Prices start on board MV Blue Dolphin at 9000 THB.


divers over reef
Diver swimming with school of fish

SSI Enriched Air Nitrox.

Joining us on our Similan liveaboard? 
This season we will be offering some amazing deals on our SSI Nitrox Diver Speciality.
Why should I choose Nitrox? 

We believe becoming a SSI Nitrox Diver enables you to get the best out of your Similan Liveaboard.

As a SSI Nitrox diver, you can increase your bottom times (NDL’s) and safety margins, plus shorten your surface intervals – so you can spend more time diving and less time waiting! In this program, you will learn the skills you need to prepare and safely plan dives with enriched air mixtures of up to 40% oxygen. 
Upon completion, you will earn an SSI Enriched Air Nitrox 32% or 40% certification.

Prices start on board MV Blue Dolphin at 9000 THB.

*includes 14 tanks of Nitrox*


Open Water Diver.

*currently only available in our Koh Tao location*

This globally recognised certification program is the best way to begin your lifelong adventures as a certified scuba diver. Once you have completed all the skills to a safe, confident level and certification is gained.  You will be able to dive to a maximum depth of 18M with an equally or more qualified dive buddy.

Before starting this course you need to be able to swim 200m and float or tread water for 10 minutes unaided.

Facts and Training Standards

Minimum Age
Amount of Pool/Confined Water Sessions
Amount of Open Water Sessions
Maximum Training Depth
18 m / 60 ft


We now also offer a range of speciality courses!!

Including Deep, Sidemount, Photo-Video and several ecology speciality’s with more getting added all the time. These specialty’s can be done in number of ways and on board any of our boats. If this is of interest then get in touch and we can start to custom plan your package or course