Back Door is a large reef system extending from Mpai Bay along the north-western coast of Koh Rong Samloem. The topography features large boulders in the shallows and cliff-like overhangs. This site is suitable for intermediate divers, with depths ranging from 5 to 40 metres and an average depth of 12 metres. Access is by boat only. Divers should be prepared for mild currents and variable visibility between 5 and 30 metres. Hazards include boat traffic, deep sections, sea urchins, sharp coral, and venomous species such as lionfish and stonefish. Night diving is available at this location.

Coral Garden is a shallow reef located in the Koh Rong Archipelago, offering an accessible environment for both snorkellers and beginner divers. The site features depths ranging from 5 to 13 metres, with an average depth of 10 metres. Conditions are generally relaxed, characterised by mild currents and visibility that fluctuates between 5 and 25 metres. Access to the reef is by boat only, as there are no facilities at the site. Water temperatures remain consistent throughout the year, typically between 29 and 31 degrees Celsius, making it suitable for light thermal protection.

Monkey Cave is a reef and drift dive site located at the north-western tip of Koh Rong Samloem. The topography features large boulders extending from the shore into deeper water, reaching depths between 8 and 15 metres. Access is by boat, with the site situated 500 metres from the coast. Divers encounter mild currents and visibility ranging from 5 to 25 metres. The site is suitable for beginners and supports night diving, where sharks are a known hazard. Species recorded around this area include wrasses, pink skunk anemonefish, elongate clams, nudibranchs, butterflyfish, moray eels, and groupers.

Mpai Bay offers a combination of reef and muck diving directly off the village on Koh Rong Samloem. The site is well-suited for beginners, with an average depth of 7 metres and a maximum depth of 10 metres. Divers can access the site from the shore or by boat. Conditions are generally mild, with visibility ranging from 5 to 10 metres and water temperatures between 29C and 31C. Night diving is available at this location. Due to the proximity of the village jetty, boat traffic is a significant hazard; divers must use a delayed surface marker buoy at all times. Sharp coral is also present in the area.

Corner Bay is a reef dive site located off Koh Rong Samloem, Cambodia. The site features depths ranging from 5 to 16 metres, with an average depth of 11 metres. Access is by boat only. Divers should be prepared for moderate currents and visibility that can fluctuate between 5 and 25 metres. Due to the presence of sharp coral and the potential for strong currents or low visibility, this site is suited for intermediate divers. Night diving is permitted at this location. Water temperatures remain warm throughout the year, typically ranging between 29 and 31 degrees Celsius.

Corner Bar is a reef dive site located 1500 metres off the coast of Koh Rong Samloem. Accessible by boat, the site features depths ranging from 7 to 16 metres with an average of 12 metres. Divers can expect mild currents, though strong currents are a potential hazard. Visibility at the site fluctuates between 5 and 25 metres, and water temperatures remain warm throughout the year, typically between 29 and 31 degrees Celsius. The site is suited for intermediate divers, with typical dive times lasting around 50 minutes. Air fills and equipment rental facilities are available for those planning a visit.

Koh Kon is a reef site located off Koh Rong Samloem, Cambodia, suitable for beginner divers and snorkellers. The site features a depth range of 12 to 14 metres, with an average depth of 10 metres. Access is by boat only. Conditions are generally manageable with mild currents and visibility ranging from 10 to 25 metres. Water temperatures remain warm, between 29 and 31 degrees Celsius throughout the year. The site is also available for night diving. Divers should remain alert for surge and swell, which can pick up unexpectedly and affect comfort on the reef. Ensure all equipment is prepared before departure as there are no on-site facilities.

Middle Tree is a coral reef site situated within the Koh Rong Archipelago Marine Protected Area. As a designated conservation zone, the area is primarily managed for research purposes. The reef features depths ranging from 5 to 14 metres, with an average depth of 10 metres. Access to the site is by boat, as it is located 5 kilometres from the shore. Divers can expect mild currents and visibility fluctuating between 5 and 25 metres. Water temperatures remain warm throughout the year, typically between 29 and 31 degrees Celsius. Hazards at this location include boat traffic and sharp coral structures.