Ao Taloo Lancha is a reef site located off Koh Adang, Thailand, offering a shallow environment suitable for beginner divers. The reef features a mix of hard and soft corals across depths ranging from 5 to 14 metres, with an average depth of 9 metres. Divers typically experience mild currents and visibility between 10 and 20 metres. Access is by boat only, and divers should remain cautious of sharp coral formations and surface boat traffic. With water temperatures consistently between 29 and 31 degrees Celsius, the site provides a comfortable setting for 45-minute dives.

Koh Usen is a reef site located off Koh Adang, Thailand, suitable for both diving and snorkelling. The site features a consistent depth of approximately 8 metres, making it an accessible location for beginners. Entry is via the shore, and divers can expect mild currents and visibility ranging from 10 to 20 metres. Water temperatures remain warm throughout the year, typically between 29C and 31C. Night diving is available at this location. Hazards to be aware of include boat traffic and sharp coral. Species recorded around this area include wrasses, butterflyfish, parrotfish, anemonefish, groupers, moray eels, sea kraits, and spiny lobsters.

Koh Yang East is a reef site located 1000 metres from the shore of Koh Adang. Divers typically experience depths ranging from 5 to 24 metres, with an average depth of 18 metres. The site is accessed by boat and is suitable for beginners, though conditions can include mild currents and surge. Visibility varies significantly, ranging from 5 to 30 metres. Water temperatures remain consistent between 29C and 31C throughout the year. Hazards at this location include jellyfish, lionfish, sharp coral, stonefish, and strong currents. Species recorded around this area include wrasses, butterflyfish, anemonefish, parrotfish, sea kraits, titan triggerfish, and giant morays.

Koh Bang Nuea features a diverse underwater topography comprising a shallow reef, a drop-off, and a pinnacle. Located 20 kilometres from shore, this site is accessible by boat and offers depths ranging from 5 to 30 metres with an average of 15 metres. Conditions include mild currents and visibility between 10 and 30 metres. Divers should exercise caution regarding sharp coral and boat traffic, particularly when surfacing near the pinnacle. Species recorded around this area include wrasses, anemonefish, butterflyfish, and parrotfish. This site is suited for intermediate divers who should maintain good buoyancy control to navigate the varied structures safely.

Koh Yang, located off Koh Adang, offers a diverse underwater landscape featuring a reef, wall, and pinnacle. Divers can explore depths ranging from 5 to 30 metres, with an average depth of 18 metres. Visibility typically spans 10 to 30 metres. Access is by boat only, and the site is suited for intermediate divers due to moderate currents and potential surge near the structures. Divers should plan their entry around tidal timing to manage current strength. Species recorded around this area include wrasses, butterflyfish, parrotfish, anemonefish, surgeonfish, sea kraits, titan triggerfish, giant morays, and painted spiny lobsters.

Long Beach/Mini Rocks is a reef and artificial reef site located off Koh Adang, Thailand. Accessible only by boat, the site sits approximately 5000 metres from shore. Divers can expect depths ranging from 6 to 9 metres, with an average depth of 7 metres. Conditions are generally mild, though visibility varies between 5 and 15 metres. The water temperature remains consistent throughout the year, typically between 29C and 31C. Due to the nature of the environment, divers should be aware of boat traffic and sharp coral. This site is suitable for beginners, with typical dives lasting around 45 minutes.

Koh Yang West is a reef site located 1000 metres from the shore of Koh Adang, Thailand. The site offers a depth range of 5 to 30 metres, with an average depth of 15 metres. Access is strictly by boat. Divers should be prepared for moderate currents and potential surge, as well as sharp coral structures. The site is suitable for intermediate divers and supports night diving. Visibility varies significantly, ranging from 5 to 30 metres. Water temperatures remain consistent throughout the year, typically between 29C and 31C. Guided tours are available through local dive shops.

Zero Rock is a submerged pinnacle located off Koh Adang, offering a straightforward structure for divers. The site ranges from 5 to 25 metres in depth, with an average of 12 metres, making it suitable for beginners. Divers can explore the pinnacle, which features soft corals, sea fans, and sponges. Conditions vary, with visibility between 5 and 25 metres and moderate currents that can strengthen unexpectedly. Boat access is required to reach this site, which sits 25 kilometres from shore. Due to regular boat traffic in the area, divers must deploy a surface marker buoy before ascending. Be aware of stonefish resting on the bottom and avoid touching rocky surfaces.