Small groups, maximum 3 students per instructor in Open Water and 2 for the Advanced Adventurer




We are a diving school and we believe in the training of our students. We think that in order to teach well we must be focused on the student , and that is why although today the standard ratio of most diving schools is 4 students per instructor.
In IHASIA we have reduced these ratios to a maximum of 3 students per instructor in Open Water courses and 2 students per instructor for the Advanced Adventurer .


The school is located in the southern part of the island, Chalok Baan Kao . This is the most peaceful beach in Koh Tao , and from here you can enjoy different activities without the hustle of renting a motorbike ... You will be able to discover beautiful and lesser visited beaches , See incredible views and sunsets from the nearby viewpoints and be able to snorkel with sharks in the famous and nearby Shark bay. Due to the place and the people that visit us, we have a super nice and relaxed atmosphere . The best option is for you to come and meet us and see through your own eyes.


Over 15 years of experience support us as professionals. The IHASIA family is made up of a group of people that we consider ourselves as co-workers and friends outside of the school.Something fundamental in our philosophy of teaching and which sets us apart on the island is that the members of our staff stand out for their enjoyment for the sea , the passion for teaching and for their experience . The whole IHASIA team has years of experience in both Koh Tao and the elsewhere. Our standards are very clear ... an experienced instructor is not the same as a newly trained instructor on the island.


Do you want to go around the school? Do you want to know our beach, zone of hammocks and the rest of the facilities? No noise, no bikes, no party ... We are waiting for you!

You can see this spectacular 360º view of the school and our beach.



Discover Scuba Dive

The Discover Scuba Dive is aimed for those who wish to enjoy the feeling of diving . Coming to Thailand and not enjoying our precious crystal water seabeds ? Even if you do not have much days in Koh Tao, you can still enjoy this activity and become a diver for a day .

More info contact HERE

Open Water Diver

The Open Water Diver (OWD) Is the gateway to the diving world. In this first course you will receive a certification as an independent diver. After obtaining the certification, you will be able to dive in any of the thousands of diving centres from all over the world.

More info contact HERE

Advanced Adventurer

The next step in the adventure of diving. Do you feel comfortable as Open Water? With this certification you will be able to learn orientation , the use and importance of the security that a diving computer can provide you, try out the amazing world of night diving and even do deep dives of up to 30 meters.

More info contact HERE

Did you know that you have to wait 24 hours before flying after diving? Would you like to know if you have any physical conditions that prevent you from diving? In the following link you can download a simple medical questionnaire, if after reading it you have any doubts, do not hesitate to consult us.


We organize diving trips every day for certified divers.  We have a weekly calendar for you to chose the dive site you would like to visit.

To see our dive schedule click HERE


Would you like to make the leap to the professional? Today, a lot of people decide to make the leap to the professional in order to live on what is their passion.

More info contact HERE


Koh Tao, a small island of just 21 sq km, is situated 70kms off the coast, in the gulf of Thailand.

Between Chumpon and Suratthani. The name of Koh Tao means literally "Turtle island", name given by the fact that a few years ago many of these animals could be seen around the island, though nowadays, the only way to see them is under water.

Not long ago, when the island wasn´t inhabited, the only visitors were the local fishermen who used it as shelter during monsoon season, and as a place to rest during long work periods in the sea.

On the 18th of June 1899, His Majesty the king Chualonkorn (Rama V 1868-1910) visited Koh Tao leaving evidence of his trip with a monolith that still today can be visited in Sairee beach. Since 1933, the island was used as a political prison until, in 1947, Khun A-Paiwong, Prime Minister at that time, gave a royal pardon to all political prisoners on the island, which turned it into uninhabited again, though not for long.

That same year, Khun Ueam and his twin brother Khun Oh, reached Koh Tao from the nearby island Koh Pha Ngan with their traditional sail boat. A trip that at that time could be considered a dangerous journey.

They anchored their boat in the famous Sairee Beach, in the west coast of the island. Bringing their families later on, they began to cultivate their rich lands creating the first community to inhabit the island.

In the 80´s decade the first travelers discovered the heavenly Koh Tao´s beaches, and quickly became one of the favorite destinations for backpackers in South East Asia, Which accelerated the development of the island. Creating faster boat routes, a wide variety of accommodation, and of course, a huge infrastructure designed for scuba divers.

During the 90´s, Koh Tao´s reputation was known all over the world, which made the number of visitors grow considerably until Koh Tao was positioned into one of the main touristic destinations for travelers from all over the world. Because the island combines unbeatable diving spots for beginners, and the economic characteristic prices of Thailand.

Nowadays, Koh Tao still has that paradisiac beauty as a character, including long extensions on the island that are still virgin and uninhabited. With just 21 sq/km and oriented from North to South, Koh Tao is the smallest and laid back island in the archipelago.

Is easily reachable by plane via the nearby island Koh Samui, then linked through one of the many ferries that connect the islands daily. The island is also accessible by ferry directly from Chumphon and Surattani every day. With less than 10 km long from North to South and barely 3km wide from East to West, is pretty easy to move around in a motorbike, bicycle, or even walking.

Another option to visit the multiple beaches in the island is renting a kayak and paddle around it, though we should be well prepared for this, as the sun won´t stop striking.




To buy your ticket from Bangkok, you can use any of the agencies that are on Khao San Road, from about 850 bths, with the following options.
Bus + ferry: Departure at 18:00 and arrival at Koh Tao at 9:30 the next day.
Train Bed + Ferry: Departure at 19:30 from Hua Lamphong Station and arrival at Koh Tao at 9:30 the next day (in this case you should buy your ferry ticket once at Chumphom Station.
You can make your reservation:
This link

From Chumphon it is possible to hire the ferry ticket which will leave us at the port of Mae Haad in the center of Koh Tao.
There are several companies doing these routes:
Lomprayah: at 7:00 and 13:00, arriving at 9:30 and at 2:30 pm respectively.
Songserm: at 7:00, duration of the trip 3 hours and arrival at 10:00 approx.
In addition, a night ferry service at 24:00 arriving at about 6:00 in Koh Tao.
You can make your reservation:
This link

If you are arriving at the Suratthani airport or if you are traveling from the east coast, Krabi, Koh Lipe, Phuket or Koh Phi Phi.
You have two options during the day with the companies:
Lomprayah: at 9:00 am and at 2:30 p.m., arriving at 2:30 p.m. and 6:30 p.m. respectively.
Seatran: at 9:30 and at 12:30, arriving at 14:30 and at 18:30 respectively.
You will also have the option of going from Suratthani to Koh Tao by night on the night ferry that departs every night at 9:00 p.m. to reach Koh Tao at 6:30.
You can make your reservation:
This link

Koh Phanghan and Koh Samui are the neighboring islands to Koh Tao, one known for its Full moon party and the other having airport.
From Koh Phanghan
Lomprayah: at 8:30, 13:00 and 17:30, arriving at 9:30, 14:30 and 18:45
Seatran: at 8:30, 13:30 and 17:00, arriving at 10:00, 15:00 and 18:30
You can make your reservation:
This link from Koh Phanghan
From Koh Samui (Nathon Pier)
Lomprayah: at 11:10 and 17:00, arriving at 14:30 and 18:45
From Koh Samui (Bangrak Pier)
Seatran: at 8:00 a.m., 1:00 p.m. and 4:30 p.m., arriving at 10:00 a.m., 3 p.m. and 6.30 p.m.
You can make your reservation:
This link fromKoh Samui

Desde Krabi es posible contratar el billete que nos dejará en el puerto de Mae Haad, en el centro de Koh Tao.
Tenemos la opcion de bus +From Krabi it is possible to hire the ticket that will leave us at the port of Mae Haad in the center of Koh Tao.
We have the option of bus + ferry or minivan + ferry:
Bus + ferry: at 7:00 and at 12:30, arriving at 14:15 and 19:45 respectively.
Minivan + ferry: at 8:00 and 11:00, arriving at 15:30 and at 18:30 respectively.
You can make your reservation: ferry o de minivan + ferry:
Bus + ferry: a las 7:00 y a las 12:30, llegada a las 14:15 y a las 19:45 respectivamente.
Minivan + ferry: a las 8:00 y a las 11:00, llegada a las 15:30 y a las 18:30 respectivamente.
Puedes realizar tu reserva:
This Link

From Koh Phi Phi it is possible to hire the ticket that will leave us at the port of Mae Haad in the center of Koh Tao.
We have the option of taking the direct trip from the east coast to Koh Tao departing from Koh Phi Phi at 9:00 and arriving in Koh Tao at 18:30.
You can make your reservation:
This Link

From Chiang Mai in northern Thailand it is possible to hire the ticket that will bring us to Koh Tao.
We have the option to travel with the combination train + ferry or bus + ferry
Train + ferry: Departure at 17:00 and 18:00 and arrival at Koh Tao at 8:45.
Bus + ferry: Departures at 7:00, 18:35, 19:15, 19:30 and 20:00 and arrival at Koh Tao at 8:45. You can make your reservation:
This Link

Laem Klong is the resort we have closest to the school.
The majority are rooms with a double bed, fan and private toilet.
There are also rooms with private washbasin and fan for 3 and 4 people
Prices for rooms for 1 or 2 people between 350 and 450 bths
Prices for rooms for 3 or 4 people between 600 and 800 bths
This resort does not have a website but we can see it in the 360º view of the school.

JP Resort is situated on the seafront and also has a swimming pool for visitors
Located in the area of ​​Chalok ban Kao, 5 minutes walk from the school.
Rooms from 500 bths for 2 people.
You can check their availability from this link.

Big Fish, facing the beach of Chalok and a few minutes from the school, has rooms with fan, hot water and air conditioning.
Prices for rooms for 1 or 2 people from 500 bths fan, 1000bths hot water and 1500bths with air conditioning + hot water.
You can check their availability from this link

Located in Chalok Baan Kao, Koh Tao Tropicana Resort is the perfect place to tour Koh Tao and surrounding areas. From here, guests can enjoy easy access to all that the lively city has to offer. With the city's main attractions such as Chalok Ban Kao Bay within close reach, visitors to the hotel will just love its location.
All hotel's guestrooms have all the conveniences expected in a hotel in its class to suit guests' utmost comforts. Each guestroom is fully equipped with non smoking rooms, air conditioning, desk,
You can check their availability from this link

At Aukotan Place Hotel, every effort is made to make guests feel comfortable. The hotel offers access to a vast array of services, including laundry service / dry cleaning, business center. The hotel offers access to a wide range of services, including: free Wi-Fi in all rooms, shop, fax equipment, ticket sales, Wi-Fi in common areas.
You can check their availability from this link

Freedom Beach Resort, located on Freedom beach.
The hotel offers an excellent variety of recreational facilities, including private beach and garden.
This 3-star hotel enjoys an excellent location and provides access to the island's most interesting sites.
You can check their availability from this link

Koh Tao Paradise Resort is one of the best resorts on the island and is a 5 minute walk from our school.
It has a swimming pool, breakfast included and all rooms with air conditioning.
Prices start at 1900 bths per night and per room.
You can check their availability from this link.

To enter Thailand we have 2 options
Visa on arrival:
Arriving by plane they give you 1 month and if you arrive by land you will have 15 days.
Visa from a Thai embassy or consulate:
You will get a simple entry with a maximum stay of 2 months expandable 1 month more if you pass by an immigration office, the closest to Koh Tao is in Samui.
More info

For those who intend to spend more time in the country, there is a new visa since the end of 2015.
Multi-entry visa:
6 months of stay and a maximum of 60 consecutive days, having to leave the country to re-enter.
More info

To travel to Thailand is not obligatory any type of vaccines except that you are resident in Argentina, that in this case you must present your vaccination card against the yellow fever.

The recommended vaccines would be the following:

Typhoid Fever and Hepatitis A: It is a disease that is associated with poor hygiene with food and water quality. Thai cuisine is based on the use of fresh and undercooked ingredients which makes the products in most restaurants consumed in the day, especially in street food stalls. On the other hand, the water that is drunk, with which the products are cleaned, is potable water with which the risk we think is minimal.

Hepatitis B: As such it is a disease that is transmitted by sexual contact, blood transfusion or by the use of contaminated needles. Using protection when you are going to have sex and in case you want to get a tattoo verify that the study gives you genuine guarantees you should not have any risk. Now all this will vary if you are going to be for a long period in remote rural areas (doing volunteers, retreats ..), not making a 2 day trekking visit. In these cases if we would recommend vaccination of all these diseases would even recommend the vaccine against Japanese encephalitis.

The only vaccine that every traveler should have a day when he wants to travel to Thailand is rabies and tetanus as a cut can be done on a trip, is something that can not be predicted

Vaccinating or not is also a very personal thing, it is a choice that should be free as no vaccinations are mandatory to travel to Thailand, except that you are Argentine.

- If you are resident in Argentina to be able to process your entry visa to Thailand you must have the yellow fever vaccine. If you are Argentine but you have more than 6 months outside the country, vaccination is not necessary

- If you are Uruguayan you should also have the vaccine against yellow fever. Although it is not a compulsory process to obtain a visa, it is advisable to have it.

- If you have lived in a country where yellow fever is common in the last 6 months you are obliged to keep the yellow fever vaccine up-to-date

- If you do not comply with the previous cases you are not obliged to have any type of vaccine up to date. It is free choice of each one

We all know the importance of traveling quietly and perhaps it would not be a bad idea to have travel insurance to enjoy a good and relaxed vacation.
For the diving theme, you should not worry as the school has insurance for all activities related to the school.

Thanks to being the official center recommended by Iati Insurance in Thailand and being the collaborating center of the web

Mochileros en Tailandia (Travel web 1 in information on Thailand and Southeast Asia) we offer you the opportunity to get a discount on your travel insurance. We remind you that Seguros Iati is the most recommended insurance for travel bloggers and backpackers.

Get a 5% of discount with IHASIA DIVING KOH TAO .



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Chalok Baan Kao
84360, Surat Thani - Thailand
Contact number : (0) 857 909 811

Customer service hours : 8 am - 13 pm / 14 pm - 19 pm