Sail Rock Koh Samui

Dive Sites in the Koh Samui archipelago

Sail Rock

Sail Rock is undoubtedly the most famous dive site here in the Koh Samui archipelago.  Located about 45 kilometers north of Koh Samui is mid way between Koh Phangnam and Koh Tao. Sail Rock was at one time use as target practice by the Royal Thai Navy but now provides a sanctuary for abundant species of marine life. The dive site starts at about 35 metres around the base of the rock and rises out of the sea to about 12 metres.sail Rock

There is a swim though located on the northeast side which is called the chimney, it starts at 18 metres has a opening at 12 which is called the window and exits at 6 metres.

Whilst a variety of larger pelagic fish including Barracuda, Mackerel form huge schools around the rock, present on the rock itself is an incredibly varied ecosystem formed by countless species including Groupers, Wrasses, Snapper, Batfish, Angelfish, Damselfish.

Numerous interesting species of marine life such as Scorpionfish, Moray Eels, Shrimps, Nudibranchs and Sea Slugs can also be found both on the wall and amongst the hard and soft corals.

Depending on season and conditions, Sail Rock is also one of the Gulf of Thailand’s sites most commonly visited by the world’s largest fish, the immense Whale Shark.

Snorkelling Note: Although primarily a diving site, Sail Rock also offers excellent diving & snorkelling trips when conditions are suitable.




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