Book now at our low season rates
before the price increase
before the price increase
Discover Thailand’s best dive sites with Discovery Divers and its daily dive trips from Koh Samui: Sail Rock, Chumphon Pinnacle and more
Discovery Divers operates daily scuba diving trips from Koh Samui, Thailand, using our own speedboats designed to reach the best dive sites in the Gulf of Thailand quickly, comfortably and safely.
Our modern fleet allows us to access world-class dive sites such as Sail Rock, Chumphon Pinnacle, Southwest Pinnacle in the shortest possible time.
We can reach Koh Tao in under 90 minutes and Sail Rock in under 60 minutes, giving you more time for what matters most: scuba diving.
This means longer dives, relaxed surface intervals and a smooth return to Koh Samui in time to enjoy the rest of your day.
All of our dive boats are fully equipped with marine toilets, emergency oxygen, first aid kits, navigation systems and life jackets. Our captains are among the most experienced in Koh Samui, and our crew is trained to support professional scuba diving operations to the highest safety standards.
Not certified yet, or interested in advancing your diving skills? Discover our PADI scuba diving courses in Koh Samui.
4510 THB
VAT not included
4235 THB
VAT not included
4700 THB
VAT not included
Planning your first trip to Koh Samui? Discover our dedicated page to learn more about the island, its beaches, climate, activities, and the best things to do during your stay.
Sail Rock, known as Thailand's most famous dive site, is a granite pinnacle in between Koh Phangan and Koh Tao that rises 15M out of the water.
It is a world class dive site and great for all levels of divers as there is much to see from the surface all the way to the bottom.
Sail rock is home to the famous “chimney” which is a vertical swim-through where you can enter at 18M and exit at 12M or 7M into the sunlight and beautiful pink anemones.
Sail Rock is basically a wall dive covered with tons of soft coral and anemones. There are huge schools of marine life here including trevally, barracuda, great barracuda, king mackerels, tuna, fusileers, giant groupers, giant moray eels, batfish, angelfish, butterfly fish, scorpion fish, and always a chance for the visiting whale shark.
For the advanced diver there are a series of submerged pinnacles off the main rock that are exciting to explore.
Widely considered one of Thailand's premier dive site, Chumphon Pinnacle is also one of the islands most challenging, with occasionally strong currents. Ranging from depths of 14m to 36m, the site is a group of massive rocks arranged in a rough oval and running north to south.
Visibility is superb in season, and the site plays host to a wide variety of pelagic as well as reef fish. Great barracuda, king mackerel, grouper, and tuna throng to Chumphon year round. Also see huge schools of batfish, trevally, fusileers. This site is also great for seeing some of the smaller stuff such as banded shrimp, boxfish, and white eyed moray eels. As you go shallower there are huge fields of anemones which will blow your mind. Whale shark sightings are common here as well as keep you eyes open in the shallow water for the occasional groups of beluga whales.
As the site is a fair distance offshore, visitors from the open ocean are unpredictable and sailfish, oceanic white tip sharks and bull sharks have been spotted.
Mango Bay is a beautiful protected bay on the north side of Koh Tao which is perfect for beginning divers and experienced divers looking for a nice relaxing dive. There are beautiful rock formations and stunning hard corals in which can be seen large schools of fusiliers, barracuda, groupers, triggerfish, angelfish and butterfly fish. Also in you look close in the sand you can see seahorses and gobies.
Twins or Twin Peaks is one of the most popular sites on Koh Tao due to its diversity and that it's able to be enjoyed by beginning divers as well as experienced ones. There are two sets of pinnacles with the first set a maximum of 10 meters and the deeper set a maximum of 18 meters. There are many divers fish that make their home here including blue spotted sting rays, moray eels, pufferfish, angelfish, groupers, wrasse, the ornery triggerfish and cute gobies in the sand. Also the famous clown fish circle is here where a family of nemos make their home inside a circle of rocks, a must see on this dive. Twins is also home to buoyancy world, which is a group of man made sculptures that is great for putting to the test your buoyancy skills.
White Rock is a very diverse site made up of two big granite boulders with a bunch of smaller ones surrounding them. The maximum depth here is about 25M, but with the layout of the rocks you can have great dives at the shallower depths so this site is great for both open water and advanced divers. Here you can see stingrays, moray eels, yellowtail barracuda, turtles, butterfly fish, angelfish and some triggers to keep you alert.
Green rock consists of a bunch of boulder formations that create an impressive collection of swimthroughs which is great to practice your buoyancy skills. It is a very diverse site with beautiful diving from 8M to 28M. Here you can see eels, batfish, groupers, angelfish, pipefish and turtles. Also keep your eyes open in the sand a round the rocks for titan and yellow margin triggerfish which many whom make their home and nests here.
Appropriately named for its resemblance to a sharks dorsal fin, this is one of Koh Tao's treasures. Each side of the island is its own dive site, with one side packed with a huge variety of hard corals and sponges, making this a popular home for turtles. The other side boasts a breathtaking soft coral garden with frequent sightings of stingrays, moray eels and titan triggerfish. Currents at this site can be stronger than usual for this area which makes this the perfect opportunity for a drift dive.
Southwest Pinnacle is a pinnacle submerged beneath the surface lying about 15 minutes from Koh Tao island. The pinnacle ranges from 5m to 30m over a range of pinnacles and incredible marine life can be found there different to other sites in Koh Tao. Big schools of yellow tail snapper, barracuda, fusiliers, giant groupers, blue spotted stingrays and moray eels can also be found there. Lionfish, sea pens, and even the occasional Whale Shark have been spotted there also. Not a site to be missed.
We focus on quality diving experiences, not mass tourism. Our dive trips are designed for divers who value time underwater, safety and marine encounters.
As a full-service PADI dive center in Koh Samui, we take care of everything so you can focus on diving. We handle your equipment after every dive: rinsing, drying and secure storage at our dive center.
You simply step off the boat and relax.
Our dive trips are conducted in small guided groups (maximum 4 divers per guide), tailored to experience level and interests, and led by highly experienced professional dive staff.
We offer state-of-the-art scuba diving rental equipment suitable for beginners and certified divers. All equipment is renewed regularly, washed daily and professionally maintained in our on-site equipment room.
We have a comprehensive range of Men’s, Women’s and Children’s 3mm shorty wetsuits as well as a wide variety of fins, masks, and snorkels to fit virtually everybody.
In addition, we also hire digital underwater cameras, console and wrist dive computers.
To join our scuba diving day trips from Koh Samui, please bring the following on your first diving day to avoid delays:
Your diver certification card
Your logbook (if available)
A completed medical questionnaire
If you are PADI certified and have lost your card, we can verify your certification online.
Our team will assist you on arrival to make your check-in smooth and quick.
The team at Discovery Divers is like a big family that welcomes you immediately. They are warm and friendly and care about your experience being the best possible. The equipment was good, the food was delicious and the coral and marine life were some of the best I have seen anywhere in the world.
Been on this service today with the team and it has been BRILLIANT!... Would definitely recommend to anyone looking to do scuba diving or snorkeling as we've both had the best day today with you guys on the boat and the rest of the team and boat team
We had a great time with Discovery Dive Centre. From the email contact, pick up from the hotel, equipment to the dive team it was all great. It was all easy and very professional. Thanks to that the dive was very relaxing and enjoyable despite not so great visibility. Highly recommended!
Fast & Comfortable Boat Dive Trips from Koh Samui
All of our daily scuba diving trips from Koh Samui are operated by fast, purpose-built speedboats. Early departures allow you to enjoy two relaxed dives at Thailand’s best dive sites and still return to Koh Samui in the afternoon.
Our dive trips include hotel transfers from most areas of the island, tanks, weights, full equipment use, professional dive guiding, food and drinks. There are no hidden costs — just bring yourself and enjoy a smooth, well-organized scuba diving experience.
Comfort, Hydration & Responsible Diving
The tropical sun in Koh Samui can be strong, so your comfort and safety are part of our priorities. Although our boats offer shaded areas, we recommend bringing sunscreen and staying well hydrated throughout the day.
If you suffer from motion sickness, tablets can be provided before departure. For safety reasons, we ask all divers to consume alcohol responsibly before any scuba diving activity. Our team reserves the right to refuse diving to anyone deemed unfit to dive.
High-Quality Breathing Air for Scuba Diving
We fill all scuba tanks using a fully licensed air supply system, so you can dive knowing the air you breathe meets strict quality standards for safety, reliability, comfort, and consistent performance during every underwater adventure worldwide.
Our compressors are professionally maintained and our filtration systems are serviced and replaced before recommended service intervals. This guarantees clean, safe breathing air on every scuba diving trip for beginners, certified divers, instructors, and professionals alike.
Emergency Support – Recompression Chamber Network
Discovery Divers is a committed member of the SSS Recompression Chamber Network. In the unlikely event of a diving accident or decompression sickness, this network ensures rapid access to professional hyperbaric medical treatment.
This provides an additional level of security and peace of mind for all certified divers joining our scuba diving trips.
PADI & DAN Insurance Coverage
Discovery Divers is fully insured through PADI diver insurance and works in cooperation with DAN (Divers Alert Network). Whether you book a full dive trip or a single dive, you are automatically covered when diving with us.
This ensures professional standards, emergency support and reliable insurance protection throughout your scuba diving experience in Thailand.
General Traveler Safety in Koh Samui
All travelers are advised to have adequate personal insurance, ideally covering medical care, theft and scuba diving activities. Thailand is no different, and we recommend consulting your travel agent or insurance to find a policy suitable for your needs. Remember to specify scuba diving as a planned activity.
Life in Koh Samui is enjoyable, and with a few simple precautions, you can easily avoid incidents that could disrupt your holiday.
