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Koh Tachai Pinnacle/The Dome
Strong-current pinnacle dive with a dome-shaped reef and big fish.
Scuba DivingFreedivingBoatAdvanced12m - 35m
Pinnacle
Local operator required
This is a liveaboard or charter dive in protected park waters, so local operator logistics are the practical route.
An advanced Andaman reef off Koh Tachai with a dome-shaped granite pinnacle, mooring-line descents, and strong current that draws pelagics.
About Koh Tachai Pinnacle/The Dome
Koh Tachai Pinnacle, also called The Dome, is a boat-access reef off the south side of Tachai Island in the Similan protected area. The site centers on a dome-shaped granite pinnacle with surrounding boulders and coral slopes that drop into deeper water. Strong currents, regular pelagic traffic, and the chance of big-animal encounters make it a classic advanced Andaman dive for experienced teams.
Safety & Access
Site Conditions
Strong current
Safety Notes
Plan the descent and ascent on the line, and do not treat the site like a relaxed reef drift. Current can change fast, so timing and buoyancy matter.
Access Restrictions
Boat access only within protected park waters; seasonal park access applies.
Legal Notes
Mu Ko Similan National Park protections apply, including seasonal opening dates and operator rules.
Where Is Koh Tachai Pinnacle/The Dome?
Featured Operators
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Local Intel For Koh Tachai Pinnacle/The Dome
Community notes to help plan your visit.
Scuba Diving
A dome-shaped pinnacle with mooring-line descents, boulder fields, coral slopes, and strong current.
Wildlife at Koh Tachai Pinnacle/The Dome
Species commonly reported at this site, with direct links into their wildlife guides.
Research + Early Community Signal At Koh Tachai Pinnacle/The Dome
Conservative research baseline blended with 1 dive by 1 diver.
Avg. Visibility25m
Access2/5 · Challenging entry effort
Coral4/5 · Healthy coral
Aquatic Life5/5 · Exceptional variety
Facilities2/5 · Limited facilities
CurrentVery strong current
Recent Visits
1 community dive logs and visit reports for this site.
