Boulder City is defined by massive granite boulders that stack and tumble to 40 metres, creating a landscape of swim-throughs, overhangs, and crevices. Located 1000 metres from shore, this site requires boat access and is suited for advanced divers due to strong currents. Visibility typically ranges from 15 to 30 metres. Water temperatures are generally 27 to 30C, though cold water masses can occasionally drop temperatures to 21 to 25C. Hazards include strong currents, deep water, and potential encounters with stonefish, lionfish, and sea urchins. Divers should maintain neutral buoyancy and avoid contact with rock surfaces. Night diving is permitted at this location.

Shark Fin Reef is a demanding dive site located at Koh Bon, Thailand, featuring a dramatic pinnacle, walls, drop-offs, and a canyon. The site reaches depths of 8 to 40 metres, with an average depth of 25 metres. Visibility is excellent, typically ranging between 20 and 40 metres. Due to strong currents and potential down currents near the walls, this site is suitable only for advanced divers. Access is by boat only, and divers must be prepared for deep diving conditions. Divers should monitor their depth and bottom time closely to avoid decompression issues and use a surface marker buoy to signal boats in the area.

Coral Gardens at Koh Bon features a combination of natural reef and artificial reef structures. The site ranges from 5 to 25 metres in depth, with an average of 15 metres, making it suitable for beginners. Visibility typically spans 20 to 30 metres, supported by mild currents. Shore entry requires caution due to sharp coral on the substrate. Water temperatures generally range from 28 to 30C, though thermoclines can occur, with temperatures dropping to 21C below 15 metres in December. The site supports both diving and snorkelling, with night diving options available. On-site facilities include air fills, equipment rental, and guided tours.

Rocky Point is a challenging pinnacle and reef site located off Koh Bon. Designed for advanced divers, the site features depths ranging from 16 to 39 metres. Access is strictly by boat, and the site is defined by strong, unpredictable currents that can shift direction around the pinnacle. Visibility typically fluctuates between 10 and 30 metres, while water temperatures generally remain between 27 and 30C, though deep-sea upwellings may cause sudden drops. Divers should be prepared to manage their gas supply and bottom time carefully. Night diving is permitted, offering a different perspective on the underwater topography.

Eastern Shallows is a reef site located off Koh Bon in the Andaman North region of Thailand. Accessible only by boat, the site features depths ranging from 18 to 24 metres with an average of 19 metres. Visibility typically fluctuates between 10 and 30 metres, and divers should be prepared for moderate currents. The water temperature is consistently warm, ranging from 28 to 30C. Hazards include lionfish, stonefish, and sharp coral; maintain neutral buoyancy to avoid contact with the reef. Species recorded around this area include wrasses, surgeonfish, triggerfish, and various eels. This site is suitable for beginners, though timing dives around slack water is recommended to manage the current.

Bird Rock is a submerged pinnacle located at the northern tip of Koh Bon. This site features a dramatic wall that drops from 5 to 35 metres, offering a combination of wall and drift diving. Due to the strong currents that can shift direction rapidly, this site is suited for advanced divers. Visibility typically ranges between 10 and 40 metres, with water temperatures averaging 27 to 30C. Divers should be prepared for thermoclines and potential surges. Access is by boat only, and the site is suitable for night diving. Divers are advised to follow guide briefings closely regarding current conditions and surface protocols.

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.

Hideaway Bay at Koh Bon offers a diverse underwater environment featuring a gently sloping reef and the Tuna Wreck. The site ranges from 5 to 40 metres in depth, with an average of 20 metres. Divers can explore the reef or visit the Tuna Wreck, which is suited for advanced divers. Underwater, there are Tsunami memorials located at depths of 12 to 15 metres. Marine life includes common sightings of triggerfish and wrasses, alongside less frequent encounters with ornate ghostpipefish, giant moray, and various groupers. Access is by boat only, with mild currents and visibility typically between 15 and 30 metres. Hazards include sharks and stonefish.