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Koh Samui best dive sites, diving on the Southwest-, Chumphon Pinnacle and Sail Rock a day trip on our comfortable catamaran yacht

Simply the best dive tour from Koh Samui!

scuba diving koh samui, whale shark on sail rock

Koh Samui Scuba Diving Adventure: Big3, on TripAdvisor the best diving tour from Koh Samui to the three top dive sites, Chumphon Pinnacle, Southwest Pinnacle and Sail Rock, in one day. You can spot a whole range of tropical reef life as well as pelagic fishes. Giant groupers, barracudas and blue marlins can be seen on these top dive sites, amongst many others. Here, you will enjoy those special kinds of dives, where diving becomes pure adventure.

Catamaran Mintra

big3 tour, sail rock, chumphon pinnacle, southwest pinnacle

Best Boat - Super Trip

Whale Shark Season

sail rock whale shark season

Top dive sites

Ultimate Comfort

ultimate in comfort

Top TripAdvisor Reviews



On the morning of your scuba diving tour, an air-conditioned mini bus will pick you up at the reception area of your Koh Samui hotel for transportation to the boat pier. Travel time to the Southwest Pinnacle is from Koh Samui approximately 90 minutes. Relax on board our spacious catamaran, custom-made to provide you superior comfort and safety. Our boat offers spacious indoor and outdoor seating and two toilets for your convenience. Throughout the day there will be snacks, a delicious Thai style lunch, and beverages available, along with crew members to assist you.

During the journey, you will meet your scuba diving instructor, who will brief you on the days’ activities. He will set up your scuba diving equipment giving you time to relax and enjoy the stunning scenery. Before arriving at the dive site, a ‘dive briefing’ will be given. With small groups of certified divers per dedicated instructor, you are unlikely to find a diving experience like this anywhere else!

On all three dive sites, there are large schools of yellowtail and chevron barracudas, batfish, queen fish, mackerels, jacks, trevally and one spotted snapper and fusiliers, these dive sites are what diving is all about. An underwater photographers dream, being able to explore and discover new and wonderful marine life with visibility sometimes reaching up to 30m with little to no currents. Large marbled groupers can also be found swimming around the dive sites or blending into the soft and hard corals and giant barracudas can be spotted hanging about on the out skirts of the dive sites. At Sail Rock, you can explore and swim through the natural underwater vertical chimney and maybe discover its secret pinnacle too. If you’re lucky enough the majestic and graceful whale shark can be seen at these dive sites.

The dive times on each dive are 45 minutes plus safety stop with maximum depths depending on certification, open water 18m, advanced 30m and deep diver 40m.

Mondays: 5,500 THB with rental equipment / 5,100 THB with own equipment


08:00 am Departure from Koh Samui
09.30 am Arrive Southwest for the 1st dive
10.30 am Coffee break
11.30 am Arrive Chumphon for the 2nd dive
12.30 pm Lunch onboard catamaran
02.00 pm Arrive Sail Rock for 3rd dive
04.30 pm Arrive Koh Samui

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For the 2IN1 tour please add 400 THB each tour.
Tours with 3 dives add 1000 THB per tour

Two dive tours each with 2 dives

8,600 THB rental equipment
7,800 THB own equipment

Three dive tours each with 2 dives

12,400 THB rental equipment
11,600 THB own equipment

Four dive tours each with 2 dives

16,400 THB rental equipment
14,800 THB own equipment

Five dive tours each with 2 dives

20,000 THB rental equipment
18,000 THB own equipment

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