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Updated by Joanna James on Dec 07, 2023
Headline for 7 Best Dive Sites in Koh Samui - Lasting memories and fun dives
Joanna James Joanna James
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7 Best Dive Sites in Koh Samui - Lasting memories and fun dives

Koh Samui, Thailand's tropical paradise, is not only known for its pristine beaches and lush jungles, but it also has some of the best dive sites in the region. Here are seven of the most beautiful underwater spots on Koh Samui that draw divers from all over the world.


Chumphon Pinnacle

Chumphon Pinnacle, located to the north of the island, is one of the most well-known dive sites near Koh Samui. This granite pinnacle rises from the seafloor, revealing a thriving and diverse marine ecosystem. Divers can see schools of barracuda, colourful reef fish, and even a whale shark on occasion. Chumphon Pinnacle is a must-see for both novice and experienced divers due to its crystal-clear waters and impressive coral formations.


Southwest Pinnacle

Southwest Pinnacle, known for its captivating underwater topography, is surrounded by a variety of dive-friendly hotels in Koh Samui Thailand catering to the needs of divers. Avani Chaweng Samui, for example, stands out as one of many excellent options for those seeking both adventure and comfort. Large boulders provide swim-throughs and hiding places for marine life. A variety of reef sharks, moray eels, and trevally schools can be found at the pinnacle.


Sail Rock

Sail Rock, located between Koh Samui and Koh Phangan, is a vertical pinnacle that attracts a variety of marine life. The site is well-known for its beautiful swim-throughs and diverse marine life, which includes giant groupers and chevron barracuda. During the right season, divers may also encounter whale sharks and manta rays, adding an extra element of excitement to the underwater adventure.


Green Rock

Green Rock is a cluster of underwater boulders covered in lush green and vibrant coral to the east of Koh Nang Yuan. Marine life abounds at the site, including nudibranchs, seahorses, and schools of fusilier fish. Green Rock's intricate rock formations and diverse marine ecosystem make it a captivating dive site for divers of all skill levels.


Koh Tao

While technically an independent island, Koh Tao is easily accessible from Koh Samui and has some of the best diving in the region. Koh Tao is a haven for underwater enthusiasts, with a plethora of dive sites catering to different experience levels. Shark Island, Japanese Gardens, and White Rock are just a few of the many dive sites available to divers, each with its own set of underwater landscapes and marine encounters.


Hin Yippon

Hin Yippon is an isolated pinnacle rising from the depths of the Gulf of Thailand for those looking for a more challenging and adventurous dive. Because of the strong currents and deep dives, the site is only suitable for experienced divers. This underwater pinnacle is frequently visited by reef sharks, rays, and large schools of pelagic fish, making for an exciting and unforgettable diving experience.


Ang Thong Marine Park

Ang Thong Marine Park, located west of Koh Samui, offers a diverse range of underwater experiences. The park is made up of 42 islands, each with its own set of dive sites and marine environments. Divers can explore underwater caves and vibrant coral reefs, as well as interact with a variety of marine life such as turtles, stingrays, and colourful reef fish.