Waterfall Bay is a reef site located at Koh Bon, Thailand, offering a gentle environment suitable for beginner divers. The site features depths ranging from 10 to 20 metres with an average of 14 metres. Visibility typically spans 15 to 20 metres, complemented by mild currents. Access is by boat only. The site is also available for night diving. Hazards include the presence of sharks and jellyfish; divers should scan the water before entry and maintain distance from sharks. Species recorded around this area include various wrasses, groupers, lionfish, moray eels, and triggerfish, alongside invertebrates such as octopus and ghost pipefish.

Fantasea Reef at Koh Bon features a diverse topography including a wall, pinnacle, and reef terrain. The site extends from the shallows to a maximum depth of 40 metres, with an average depth of 15 metres. Divers access the site via boat, 200 metres from shore. Conditions generally feature mild currents and visibility between 20 and 40 metres, though currents can strengthen unexpectedly at depth. Water temperatures typically range from 27 to 30C, although the Green Monster phenomenon may occasionally bring cooler, nutrient-rich water. This site is suited for advanced divers due to the potential for strong currents and depth requirements. Night diving is available, offering a different perspective on the reef structure.

Mooring Bay at Koh Bon is a reef site offering depths between 5 and 30 metres, with an average depth of 15 metres. Access is by boat only, as the site is located 64 kilometres from shore. Divers and snorkellers can expect mild currents and visibility ranging from 20 to 40 metres. Water temperatures typically remain between 28 and 30 degrees Celsius, though thermoclines may occasionally cause brief drops to 26 or 27 degrees Celsius. The site is suitable for beginners and supports night diving, with typical dive durations around 50 minutes. Hazards include boat traffic, jellyfish, lionfish, stonefish, and sharp coral.

Koh Bon is a prominent site in the Similan Islands, offering a diverse underwater topography of reefs, walls, and pinnacles. Divers and snorkellers can explore depths ranging from 5 to 40 metres, with visibility typically between 20 and 40 metres. The site is characterised by moderate currents, making drift diving the standard approach. Due to the significant depth and potential for strong currents and surge, this site is suited for intermediate divers with appropriate buoyancy control. Boat access is required for all dives, and night diving is available. Divers should remain close to their guides and plan their drift carefully according to shifting tidal patterns.

Donald Duck Bay at Koh Bon is a reef and pinnacle site offering depths between 5 and 20 metres, with an average depth of 10 metres. Accessible only by boat, the site features mild currents and visibility ranging from 10 to 30 metres. Water temperatures typically remain between 28 and 30C, though occasional thermoclines may cause brief drops to 26-27C. The site is suitable for beginners and supports night diving. Facilities available include equipment rental, air fills, and rinse stations. Divers should remain aware of boat traffic, jellyfish, and sharp coral in the area.

Whaleback Rock at Koh Bon is a reef and pinnacle site offering depths between 5 and 20 metres. This location is accessible only by boat and is suitable for beginner divers. Underwater conditions are generally mild, with visibility ranging from 10 to 30 metres. Water temperatures remain consistent throughout the year, typically between 28 and 30 degrees Celsius. Divers should be aware of potential hazards including boat traffic, jellyfish, sea urchins, and sharp coral. Facilities available at the site include equipment rental, air fills, and guided tours.

Three Trees is a reef and drift dive site located at Koh Bon, Thailand. The site features depths ranging from 5 to 35 metres, with an average depth of 18 metres. Access is by boat only, and the site is suitable for beginners, though the moderate current requires attention. Visibility varies between 10 and 40 metres. Water temperatures typically range from 27 to 30C, though thermoclines can cause temperatures to drop to 21C in December. Hazards include deep water, sea urchins, sharks, and strong currents. Guided tours are recommended due to the potential for currents to push divers away from the reef.

Num Chai Bay at Koh Bon is a diverse dive site featuring a combination of natural reef, artificial reef, and pinnacle topography. Suitable for beginners, the site offers depths ranging from 5 to 40 metres with an average of 15 metres. Access is strictly by boat, and the site supports drift diving. Conditions generally feature mild currents and visibility between 10 and 40 metres. Water temperatures typically range from 28 to 30C, though upwellings can cause temperatures to drop as low as 21C in December. Hazards include deep water, jellyfish, low visibility, sharks, sharp coral, stonefish, and strong currents. Guided tours are available, and night diving is permitted.