to top

Logo Calypso german   En   email   facebook

Diving and snorkeling tours from Koh Samui to Ko Tao, Sail Rock, Angthong National Marine Park and more

Dive and snorkel trips from the best boats, on the best places, for the best prices - TripAdvisor.

diving koh samui

Scuba diving and snorkeling tours in Koh Samui with the most modern and luxurious day boats in the Gulf of Thailand. Our Calypso custom-made design provides you with the ultimate in comfort, safety and style. Spacious indoor and outdoor seating; snack bar; fly deck with 360 degrees view;
sun deck and a huge dive deck.

With our high speed catamarans you reach all dive sites in the fastest and most comfortable way.

Diving Tours from Koh Samui

Big3 Simply The Best

southwest, chumporn


Big 3 One Day 3 Dives

The Big 3 are some of the three top dive sites in the world, Chumphon Pinnacle, Southwest Pinnacle and Sail Rock.

Exclusive to Calypso visit all three dive sites in one day. Experience a wild range of tropical reef life including pelagic fishes. Giant groupers, barracudas and blue marlins are discovered at these top dive sites, amongst many others.

Here, you will enjoy those special kinds of dives, where SCUBA becomes pure adventure.

View details » Show video »

Tao Island 3 Top Dive Tour

boat tao


The island of Koh Tao and Sailrock are the two islands for this amazing dive tour with Calypso. Both islands are world famous diving sites in the Gulf of Thailand. Calypso offer two dives in Koh Tao and the final dive at Sailrock.

The dives around Koh Tao may include White Rock, Green Rock, Hin Wong Pinnacle and Shark Island. The wreck of HTMS Sattakut is also a possibility at Koh Tao. This trip is suitable for all certification levels, and for training dives. PADI instructors guide you every step of the way above and below water.

View details » Show video »

Sail Rock Pure Magic

sail rock


Sail Rock is on of the best sites for scuba dive from Koh Samui. Whale shark can be spotted at the Sail Rock. For the Sail Rock is the dive season the hole year arround.

Two dives at Sail Rock in one day! MAGIC! Sail Rock sits 15 m above and 35 m below the surface with large granite boulders creating deep crevices that are hiding a variety of tiny cleaner shrimp and shallower points that are covered with anemones and seeming with colourful damsel fishes.

Sail Rock is famous for its natural underwater chimney swim through which divers can enter

View details » Show video »


Dive, Snorkeling and Try Dives

Fun and exciting holiday experiences for everyone

Tao Island Our Bestseller


Tue, Thu and Sat

The island of Koh Tao is a world famous diving site in the Gulf of Thailand. Calypso offer long and relaxed dives in quiet bays at this tropical island. Cosy warm tropical bays ideal for all levels of diving and snorkelling. The dive sites include Japanese Gardens, Mango Bay, Hin Wong Bay, Lighthouse Bay or Ao Leuk.

Certified PADI instructors guide you every step of the way above and below water. On this tour with Calypso scuba diving and courses are an option to further your career. If your career is just beginning or it has been awhile since your last dive this is a perfect tour to start. Koh Tao tour is at depths of 12 to 18 meters.

Diving details » Snorkeling details »

2IN1 Island Dreams



The Angthong Marine National Park is the most visited island in the Gulf of Thailand. The island is covered in thick mangrove forests and home to an abundance of words and wildlife. Popular for climbing the view points to see the surroundings islands and tropical waters below. Clear warm tropical waters make the park popular for snorkelling.

This tour is available:

16. July 2017 to 1. October 2017

7. January 2018 to 16. April 2018

SCUBA details » Snorkel details »

Try Dive

discover scuba


Are you interested in exploring the underwater world? Have you ever wondered what it would be like to breath with scuba gear? Discover Scuba Diving (DSD) program is for you.

For all those who always wanted to take a closer look at marine creatures, the Try Dive program is offering the perfect start into the world of Scuba.

oining one of our day trips (discover scuba is possible on any day of the week) you can do two dives down to our colourful reefs in our area. Where as at the first dive, there is a bit of training involved, we are just enjoying underwater life for the second dive.

View details »


PADI Dive Courses

Reach the best dive sites available on the best boat possible.

Scuba Diver


The PADI Scuba Diver represents the “small” license. When doing this course you will learn how to dive in a save manner down to a depth of 12 meters. The Scuba Diver course lasts one and a half or two days. The shorter option is half a day training in the pool and a day tour. The other option would be to start the Discover Scuba program first and another day tour on the second day.

View details »

Open Water Diver


International license to 18 meters: The PADI Open Water Diver is the “classic” license. When going for this course you will learn how to dive in a safe and responsible manner to a depth of 18 meters. Then you’ll be allowed to dive most of the world’s dive sites and cover the most interesting part of a reef. A wide range of important diving skills and theoretical knowledge will be part of this course.

View details »

Advanced OWD


The PADI Advanced Open Water Diver is the license for all those who are already Open Water Divers and would like to literally immerse themselves deeper into the world of scuba diving. When doing this course you will learn how to dive in a responsible manner and in different conditions down to a depth of 30 meters. Especially in terms of going deeper your senses and your abilities to dive will be sharpened during this course. Apart from depth you will also learn considerations while diving in different conditions.

View details »


Koh Samui diving in the best corner in the Gulf of Thailand


Ko Samui and its surrounding islands are situated in the most appealing part of the Gulf of Thailand. This very convenient location of not being too far off the mainland, combined with lush landscapes and picturesque beaches were the main reason that this area was discovered as a very popular tourist destination very early.

This unique location is also one of the reasons why Koh Samui, Koh Phangan and Koh Tao have something like their own ‘micro climate’ with a very short rainy season of just 1.5 months. Sunshine pure throughout most parts of the year - what more could a traveller’s heart wish for?

The diversity of our islands also adds up to the appeal of our area. Every islands has its own, very special flair. Ko Tao for example, well known as a dive destination, with its huge granite boulders is very different from the famous Ang Thong Marine Park and its remarkable limestone cliffs that make for a breathtaking tropical island scenery.

Diving, snorkeling and sightseeing at the two major tourist destinations Marine Park and Koh Tao, Koh Nang Yuan is a very unique day trip. Because of our fast and comfortable catamarans are we able to offer this trip. We start off with cruising through the breathtaking scenery of the Angthong Marine National Park with its many islands, small beaches and fascinating rocks (like the Sphinx and the Praying Monkey) followed by diving and snorkeling in that area. Than its off to the next destination Koh Tao.

Without a doubt Ko Tao and the little islets of Ko Nang Yuan can be said to be the pearl of the Gulf of Thailand. Especially when it comes down to tropical reef life. Being located a bit further off the mainland than other islands in our area makes Ko Tao the best spot for those who want to enjoy pristine coral reefs with an abundance of colourful fish.

Further off the island the underwater world changes quite rapidly. Dive sites like Chumpon or Southwest Pinnacle and especially world-class Sail Rock are famous for the huge amount of pelagic fishes. Barracudas and jackfish in large schools, or giant groupers are common encounters. Nutritious water is attracting oceanic fishes and a high amount of plankton makes for a quite reasonable chance to see the biggest fish in the world: Rhincodon typus - the whale shark.

The Ang Thong Marine Park - where visibilities can be just decent - is attracting snorkelers and especially divers for its high number of critters and smaller reef inhabitants. A challenge for every ‘macro’ photographer.

Water World

dive site map

Map in BIG »


About us: 3 decades of customer service


Calypso Diving - established in 1987 as one of the first dive centers on Ko Samui - this name stands for quality SCUBA and snorkeling services.

The coral reefs and marine life always used to be very rich in our part of the ocean - the right place for us to live our passion for the sea and for aquatic life. Out of this passion it was a matter of case to get the motivation to serve our guests as good as possible.

In those last 3 decades the dive center was on a continuous journey - always aiming to find the best possible services for its guests.

Back in the early days - when Ko Samui was hardly developed - we were offering dive trips with a traditional wooden motor vessel (MV). Our tours took us to Ko Tao, Ko Phangan, to the Ang Thong Marine Park but also we were offering shore dives around the reefs of Ko Samui itself.

Back in the 90’s Ko Samui’s face changed rapidly. More and more travellers started to flock in - we were facing new challenges. As Ko Tao is considered the best diving area in the Gulf of Thailand we decided to place the MV there as our ‘home base’. To get our guests to Ko Tao we were always in search of the best possible option. This always used to be quite a challenge for us as the 75 km from Ko Samui to Ko Tao included a boat ride that could be quite tricky at times.

Starting with transfer services with our own speedboat, we realised soon, that this option was pretty uncomfortable. Already 1 m wave can lead to a very unpleasant journey. Therefore, we decided to change this strategy and went on the public ferry. What a relief from the waves that was. There was just one big down side: travel time. Using the ferry we were spending up to 6 hours per day just travelling. When intending to do 2 dives per day, this was just too much.


Then, in 2010, Calypso made the first step towards a comfortable journey to Ko Tao. We switched to two speed-catamarans with 24 seats and outboard engines. These boats were custom made by the well-established boat builder Austhai Marine in Chonburi and were increasing travel time and comfort a lot. Fast as a speed boat but surfing way more stable across the waves than a speed boat, we were very satisfied with this option.

But has this been the end of all evolution now? Of course not…

In 2014 and 2015 Calypso was ready for a real revolution amongst Koh Samui's dive businesses. This revolution has two names: Mintra and Anatta.

These two catamarans - custom made by the same boat builder - are setting the benchmark for Ko Samui’s diving boats on a new level. Both catamarans - yes, we can easily call them dive yachts - are 17 m long and equipped with 2 powerful 440 hp Diesel engines on each boat. With maximum speeds of up to 25 knots they are almost as fast as speed boats and our guests still can enjoy maximum comfort and safety on the catamaran: plenty of space for gearing up, a chill-out lounge, 3 course lunches and fresh breakfast can be served on the sun decks, along with 2 restrooms per boat these are just a few features that Samui’s dive businesses have never seen before.

So in terms of boats and services by now we are getting closer and closer to the optimum. Just as our motivation is still as high as it was 30 years ago we are not stopping to improve in order to make our guests have a memorable time with Calypso.

One can find prove of our quality services in guests’ reviews on on on or on our facebook page.

Years of experience

Calypso 20 year member by PADI

Fun Dive Koh Tao



Calypso Diving: 27/5 Moo 3, Chaweng Beach, Koh Samui, Surat Thani, Thailand, 84320

Internet address:

Contact: Phone: +6677422437 or +6677413249 -/- Whatsapp: +66898719432 -/- E-Mail: [email protected]

catamaran, Mintra, Anatta

Left our tour catamaran Anatta on the right our catamaran yacht Mintra.
Each boat has 900 HP and cruises at speeds up to 26 knots. Fast and comfortable to all dive sites. This is the highest level of comfort you can experience from Koh Samui. The catamaran hull makes for a super smooth ride. The boats have the highest safety standards.


Calypso Links:

Privacy Policy

Terms and Conditions



Location Koh Samui

© Calypso 1998 - 2017



Koh Samui Links:

Bangkok Airways

more Links:

PADI Links