9 Best Dive Sites in Koh Samui

Where to Go Scuba Diving in Koh Samui

The best dive sites in Koh Samui offer marvellous underwater scenery, teeming with a wide range of fish such as tuna, red snapper, barracuda and mackerel. You'd be hard-pressed to find better sites within a short distance of each other and visibility is generally excellent. On your dive excursions, you’ll also come across whale sharks, giant groupers scribbled filefish and yellowtails among others.

Coral, too, is in abundance, making a day or two out diving an attractive and rewarding holiday experience. It's no coincidence that many people head to picturesque Koh Tao (Turtle Island) to learn to dive. Among the many cool spots to explore, the island's Japanese Garden dive site ranks highly in the world's 'Best Dive Sites' lists.

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Koh Tao Dive Sites

About 70 km north of Samui is the island of Koh Tao (Turtle Island). There are numerous dive sites in and around Koh Tao, which is a mini-tropical paradise offering jungle walks and white sandy beaches.

Here, the water visibility ranges from 15-30 metres and includes the popular dive spots of Chumporn and Southwest Pinnacles, Nang Yuan, Green Rock, White Rock and Red Rock. The waters around Koh Tao are home to an abundant range of marine life, including barracuda, tuna, snapper and sea turtles.

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Chumporn Pinnacles

Chumporn Pinnacles is considered one of the more challenging dive sites in Koh Samui, with occasionally strong currents and depths of 10-35 metres. True to its name, this dive site indeed consists of fascinating submerged pinnacles.

The highest of these rocks is approximately 16 metres below the surface. At Chumporn, you can swim with man-sized groupers Read More...

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Green Rock

Green Rock is a dive site in Koh Samui that provides a good selection of swim-through opportunities in depths of 4-25 metres. The rock consists of large archways, caverns, caves and crevices.

Common sightings include harlequin sweetlips, blue-ringed angelfish and moray eels. Sometimes you can spot whitetip reef sharks, and further out in deeper water, large groupers, schools of yellowtail, and blue and yellow fusiliers.

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Hin Wong

Hin Wong is a large and varied site located east of Koh Tao, with depths ranging from 10-30 metres. Unfortunately, the only shortcoming of the site is the unpredictable water visibility, which cannot be assured at all times.

Nevertheless, the site abounds with delicate sea fans and spiralling wire coral and is home to many types of fish including groupers, filefish, and snapper. If you are lucky and keep your distance, you may even see sea turtles feeding off the rich variety of food the reef has to offer.

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Samran Pinnacles

Samran Pinnacles is a dive site that tends to attract the more advanced diver as the water is deeper and the currents are certainly much stronger. The rocks are submerged in 12 metres of water and attract large schools of jackfish (bigger varieties), trevally, as well as giant barracudas.

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Southwest Pinnacles

The Southwest Pinnacles consist of 3 rock formations that range from 4-30 metres below the surface, representing a series of short wall dives. At the top of the pinnacles are blankets of underwater plant life in a stunning array of rainbow colours.

Between the rocks are many bushy black coral sea whips and gorgonian sea fans. Read More...

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White Rock

White Rock is a Koh Samui dive site that explores 2 submerged pinnacles which are only 2 metres above the surface but extend between 18-22 meters underwater. Schools of butterflyfish and angelfish predominate and colonies of staghorn corals attract breams and damsels to make their homes here.

On any given dive, look out for the more exciting sightings of sea snakes, turtles, morays and blue spotted stingrays. An interesting and equally exciting part of your dive will hopefully be an encounter with White Rock's resident titan triggerfish which are territorial by nature and supremely erratic.

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Between Koh Tao and Koh Phangan

Sail Rock

Sail Rock is an internationally renowned dive site North of Samui, between the islands of Koh Tao and Phangan. Although only 15 metres above the water, the structure extends 40 metres below the surface. The main attraction of Sail Rock is a naturally formed 15-metre high underwater dive wall or chimney. 

Divers can ascend from 18

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Ang Thong National Marine Park

Koh Yippon and Koh Wao

Ang Thong National Marine Park lies approximately 30 km to the northwest of Samui. Popularized by the movie The Beach starring Leonardo DiCaprio, the park comprises 80 islands and offers some of the best diving in Thailand.

Koh Wao and Koh Yippon are the most popular dive sites, featuring incredible swim-through experiences, not to mention other Read More...

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