

Best for advanced divers, 28-40m, boat entry, moderate current.
Tuna Wreck is an artificial reef located off Koh Bon, Thailand, resting at depths between 28 and 40 metres. This advanced dive site features a structure colonised by soft corals and gorgonians, attracting diverse marine life including wrasses, groupers, and triggerfish. Divers may also encounter ornate ghostpipefish, ocellaris anemonefish, and bluefin trevally. The site is subject to moderate currents and visibility ranging from 10 to 25 metres. Due to the depth and potential for sudden thermoclines, which can drop water temperatures by 5 to 7 degrees Celsius, divers must maintain strict buoyancy control and monitor gas consumption closely. Boat access is required for this site.
8.56790, 97.64580
Plan your descent for slack tide when the moderate current eases off, giving you more working time around the deeper sections of the wreck. A reef hook is worth bringing if your operator allows it, particularly if you want to hold position near the hull and watch the glassfish without fighting the flow.
Two approach options: enter at the shallow southeast corner of Similan Island Five and descend along the reef, or use the dedicated mooring line for a direct descent.
Recorded at this site
Depth
28-40m
Visibility
10-25m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
27-30°C
Current
Moderate
Typical Dive
30 min
Best Time
Jan, Feb, Mar, Apr, Nov, Dec
Divers regularly record wrasses, groupers, triggerfish, ornate ghostpipefish, ocellaris anemonefish, and bluefin trevally at this site.
No, this is an advanced dive site due to the depth of 28 to 40 metres and the presence of moderate currents.
The wreck sits at depths between 28 and 40 metres, with an average depth of 30 metres.
Boat access is required to reach this site, which is located 10,000 metres from shore.
No, this site is not suitable for snorkelling as the wreck is located at depths starting from 28 metres.
Diving at Tuna Wreck in Khao Lak requires the following certifications: Open Water, Advanced. Always dive within your training limits.
A rashguard or 2mm shorty is recommended for diving at Tuna Wreck in Khao Lak. Water temperatures range from 27°C to 30°C.
The best months to visit Tuna Wreck in Khao Lak are January, February, March, April, November, and December. Conditions outside these months can still be good but are less predictable.
Divers at Tuna Wreck in Khao Lak should be aware of lionfish. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.
Expect moderate currents at Tuna Wreck in Khao Lak. Good buoyancy control and some drift diving experience is helpful.
Visibility at Tuna Wreck in Khao Lak typically ranges from 10 metres to 25 metres. Conditions vary with weather, tides, and seasons.