Similan Islands #8 & #9 aerial view with Similan Diving SafarisStarfish and diver with Similan Diving SafarisMoray eel at Surin Islands with Similan Diving SafarisManta Rays at Koh Bon with Similan Diving Safaris

Diving Similan Islands, Koh Bon, Koh Tachai
Surin Islands, Richelieu Rock

Similan National Marine Park has limited the number of divers per day.
To secure your entrance into the Similan Islands we strongly advise you to book in advance.


If you are looking for the best diving sites in Thailand, then your search ends right here. Similan Diving Safaris is a western/ Thai managed PADI Five-Star Dive Center situated on Nang Thong Road in Khao Lak, Phang Nga Province, Thailand, opposite the Similan Islands.

Our services in the diving industry here in Khao Lak are unique in that we are a family-run PADI 5 Star dive center with over 20 years of experience in offering our liveaboard trips to go scuba diving in Thailand at places such as the Similan & Surin National marine parks which include, Koh Bon & Koh Tachai, and the world famous Richelieu Rock.
We try our best to give all our divers a personal service during their stay aboard our liveaboards. Similan Diving Safaris will take you to the most spectacular scuba diving destinations Thailand has to offer.

We offer a wide range of opportunities for divers to enjoy a splendid time diving in safety at the Similan and Surin Islands, Thailand.
The Similan Islands and Surin Islands in the Andaman Sea on the west coast of Thailand are renowned for its pristine waters, excellent visibility and magnificent marine wildlife and fauna. Furthermore, the colourful corals, not to mention the spectacular reefs and pinnacles offer ideal conditions for seeing Manta Rays, Eagle rays, Leopard sharks, Whale sharks and a large variety of macro, nudibranches, ghostpipe fish and harlequin shrimps leaving you with a lasting memorable diving experience.

It sounds good, right?

Our Similan liveaboard
Dolphin Queen

Similans/ Bon & Tachai Islands/ Surin/ Richelieu

Here you will find for 3 days / 3 nights or 5 days / 5 nights liveaboard on the Dolphin Queen.
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The M/V Dolphin Queen offers 10 dives on a 3 days/ 3 nights liveaboard trip to the Similan Islands & Richelieu Rock, 18 dives on a 5 days/ 5 nights liveaboard diving trip to the Similan Islands, Surin Islands & Richelieu Rock.

Similan Islands

The Similan national marine park is an archipelago consisting of 11 islands situated in the Andaman Sea off Phang-Nga province, Southern Thailand, the Similan Islands are considered among the world’s best dive destinations that offer prospective divers a wide range of options in the season from mid Oct till mid May.

The Similan Islands boasts of exceptional flora and fauna due to the Islands being uninhabited and closed for 5 months during the monsoon season (mid May till mid Oct.). This closure gives time for the coral reefs and marine life to rejuvenate.

Similan Islands

Koh Bon and Koh Tachai

During the diving safari we also visit and dive at Koh Bon & Koh Tachai. These are the islands where you might see giant oceanic manta rays and whale sharks.
Koh Bon is an island made of limestone. This island is a haven for divers thanks to the underwater pinnacle and famous for the visiting giant oceanic Manta Rays.

Koh Tachai has a plateau surrounded by giant granite boulders which attracts large schools of barracudas and giant trevallies. It is one of the best sites for scuba diving in Thailand. Sightings of whale sharks, leopard sharks, white tip sharks and giant oceanic mantas rays are regular.

The recommended depth for PADI open water divers in Similan diving sites is 18m while advanced open water divers can go as deep as 30m. PADI open water divers are encouraged to take the Advanced Open Water Course or the Adventure Deep Dive during the liveaboard safari, these courses allow you to dive up to 30 meters.

Manta Ray

Schedule & Bookings Dolphin Queen
3d/ 3n -10 dives | 5d/ 5n - 18 dives

Surin Islands

The Surin Islands are an archipelago of five different islands, including Koh Surin Tai, Koh Surin Nuea, Koh Khai, Koh Ri and Koh Klang. For purposes of conserving the environment, Surin Islands became a National Marine Park. Richelieu Rock is part of the Surin National Marine Park.
Similan Diving Safaris promises to take you safely to all the best dive sites located at the Surin Islands National Park aboard our comfortable liveaboard, the M/V Dolphin Queen.

Richelieu Rock

Our diving safaris include a visit to the world-famous Richelieu Rock. This horseshoe-shaped pinnacle reef is located about 18 km east of the Surin Islands. It is a must visit dive site because of the enormous amount of marine life. We do day and night dives at Richelieu Rock with our M/V Dolphin Queen liveaboards.

PADI Courses

The ultimate way to do a PADI dive course or learn to scuba dive with Similan Diving Safaris is on our Live aboard Dolphin Queen. Our highly competent and experienced international diving instructors are always at hand to guide you through the steps until you become a certified diver!
Courses offered are Open Water diver, Advanced Open Water diver, Nitrox, Emergency First Response (EFR), Rescue diver and Divemaster.

In 2019 PADI Asia Pacific proudly recognised Similan Diving Safaris 5 Star Dive center for 15 years of outstanding services.

 PADI Courses 

Why Choose Us?

Similan Diving Safaris have 20 years of experience in the diving industry in Khao Lak, diving the Similan and Surin Islands with an excellent service & safety record.

We specialise in eco friendly liveaboard safaris, for our guests we provide free bio degrable soaps/ shampoos, which help to reduce the acidity of the seawater that it has a low impact on the corals and marine life. Bio degreadable rubbish bags are also part of our efforts to preserve the environment. Bio degradable sun screen is available at our dive center and on the boat.

Excellent reviews (TripAdvisor) are given by our guests about our food and services aboard our liveaboards.
We pride ourselves in having some of the most competent and knowledgeable staff diving the Similans & Surin Islands and Myanmar, who are not only hospitable and multi lingual but also great navigators when it comes to selecting the best sites for diving. Small dive groups with one instructor/ guide and 4 divers.

With all these packages at your disposal, diving vacations have never been better. Whether you are a beginner or a certified diver we got you covered.
Contact us today for splendid diving safaris to the best diving islands in the Andaman Sea.
We will be glad to serve you!

Schedule & Bookings Dolphin Queen
3d/ 3n -10 dives | 5d/ 5n - 18 dives