Learn to Dive with us

Whether you want to learn to scuba dive or are already a certified scuba diver who is looking to extend your training, Ko Hai Divers is the right place to be. We offer all PADI programmes from Discover Scuba Diving to Divemaster. 

Below you can find detailed descriptions of all courses offered. There are suitable choices for everyone, from complete beginner to experienced divers, starting at the age of 8.

If you have any questions, please contact us. We are happy to answer them for you and help you make the right choice. 

Discover Scuba Diving


Never tried diving before? No time for a course? Join us for a discover scuba dive. After a short introduction one of our experienced instructors will take you on an easy and shallow dive in the sea and show you the amazing underwater world of Thailand.


Minimum Age: 8 years

1 Dive: 2,000 THB

Additional Dive: 1800 THB

PADI Scuba Diver


No time to complete the Open Water Course, but interested in becoming a certified diver? Start with the PADI Scuba Diver and learn the first basics of diving. After successful completion of three dives including skills training you will be certified as PADI Scuba Diver, allowing you to join dives under professional guidance to a maximum depth of 12 metres. The upgrade to Open Water Diver should then only take 1 to 2 days. 

Minimum Age: 10 years

3 Dives: 11,000 THB

PADI Open Water Diver


You want to become a certified diver? Then this is the course for you. It will provide you with all the skills, information and training you need to be able to dive anywhere in the world for the rest of your life. The training lasts 2 1/2 to 3 days and includes theory sessions with your PADI Dive Instructor as well as training in confined and open water. After successful completion you are allowed to dive to a maximum of 18 metres. 

Minimum Age: 10 years

5/6 Dives: 14,500 THB


- PADI eLearning (finish the theory online before your arrival): +1000 THB

- Computer Rental: +800 THB

- Peak Performance Buoyancy Specialty (one extra dive): +3900 THB

- Enriched Air Diver Specialty (Nitrox): +3000 THB

PADI ReActivate

Deep Dive

Has it been a while since your last dive? Then it is time to refresh your theory knowledge and diving skills before going back in the water. Safety first! You will start by going through the diving theory using the PADI eLearning system on your Laptop, smartphone or tablet. This can be done any time at home before your arrival. Once you are on Koh Ngai we will do some knowledge reviews together and discuss your in water requirements, before going for your first dive. Here we will practice some skills to get you comfortable in the water again, so you can enjoy the rest of this easy shallow dive. The second dive of the day is a fun dive, no more skills practice required. After completing the course you will receive either a new PADI certification card with a ReActivate stamp on it or a PADI recognition card if your initial training was done under another agency. 

Minimum Age: 10 years

Prerequisite: (Junior) Open Water Diver

2 Dives: 5400 THB

Material: PADI eLearning (finish the theory online before your arrival)

PADI Advanced Open Water Diver


You are an Open Water diver? Ready for the next step? Do your Advanced Open Water Course with us. All you need to do is complete 5 Adventure dives and the theory behind it. Two topics are compulsory (deep and navigation), the other three you can choose from a wide range (e.g. night dive, fish identification, underwater photography). As an Advanced Open Water diver you are allowed to dive to 30 metres and join night dives. A new underwater world opening up to you! 
The course can be completed in two days.

Minimum Age: 12 years

5 Dives: 12,000 THB


- Computer Rental: +800 THB

- Peak Performance Buoyancy Specialty (one extra dive): +3900 THB

- Enriched Air Diver Specialty (Nitrox): +3000 THB

Emergency First Response


During this one day course you will learn simple to follow steps for emergency care. We will teach you how to administer CPR, provide primary and secondary care in an emergency and provide emergency oxygen.


Minimum Age: 10 years

Duration: 1 day

4,000 THB

PADI Rescue Diver


Take the next challenge and become a Rescue Diver. During this course you will learn how to look after yourself and help others in critical situations. This is a fun and challenging course which will help you to recognize and prevent problems and teach you what to do in an emergency.


- Minimum Age: 12 years

- Padi Advanced Open Water or equivalent

- Valid First Aid Qualification, e.g. PADI Emergency First Response (not older than 2 years)

Duration: 2 to 3 days

13,000 THB

PADI Divemaster


Interested in becoming a Pro? Contact us for more information. We can tailor this course to suit your current experience and available time.


Minimum Age: 18 years


Duration: 3 Weeks to 3 Months (with internship)

30,000 THB (+ 7000 THB for PADI divemaster crew pack)

All courses are including equipment, PADI manual and certification (if applicable) and dive insurance, excluding National Park fees (200 / 600 THB).

At the moment we can only accept payments in cash and by PayPal (plus 4.5% PayPal charges). There is no ATM on Koh Ngai, so please bring enough money.

Cancellations received after 5pm the evening before a dive trip and no shows will be charged a 50% cancellation fee of the full trip price. By making a reservation with us, you are agreeing to this cancellation policy.