Koh Dok Mai is a limestone island featuring a vertical wall, reef, and cavern topography. Reaching depths of 32 metres with an average of 18 metres, this site requires boat access and is suited for intermediate divers due to strong currents. Visibility varies between 5 and 20 metres. The site offers opportunities for night diving, with guided tours available. Species recorded around this area include various moray eels, wrasses, lionfish, and ghost pipefish. Divers should be aware of potential hazards including deep water, overhead environments, and thermoclines.

Bungalow Bay at Koh Racha Yai offers a diverse underwater environment featuring a mix of natural reef, artificial reef structures, and wreck sites. Suitable for beginners, the site ranges from 5 to 25 metres in depth with an average of 15 metres. Access is exclusively by boat. Conditions are generally mild, though visibility fluctuates between 8 and 25 metres. Divers should be aware of boat traffic and sharp coral. Species recorded around this area include various moray eels, lionfish, cuttlefish, and wrasses. Typical dives last approximately 50 minutes in water temperatures ranging from 28 to 31 degrees Celsius.

Coral Island, located near Koh Racha Yai, offers a reef dive suitable for beginners. The site features depths ranging from 2 to 20 metres, with an average depth of 10 metres. Divers access the reef by boat, encountering mild currents and water temperatures between 29 and 31 degrees Celsius. Visibility typically spans 5 to 15 metres, though it can fluctuate with little warning. On-site facilities include a dive shop, cafe, and showers. Due to variable visibility, divers should consult local staff regarding current conditions before entry. Morning departures are recommended to experience calmer surface conditions before increased boat traffic.

East Cape at Koh Racha Yai offers a straightforward reef dive suitable for beginners. The site features depths ranging from 5 to 15 metres with mild currents. Visibility varies significantly, ranging from 5 to 25 metres depending on conditions. Access is by boat only, and divers should be aware of boat traffic in the area. It is recommended to arrive early in the morning to avoid congestion from day-trip vessels. When surfacing, always listen for boat traffic and remain close to your guide. Use a surface marker buoy to ensure visibility to boat operators when ascending.

Sea Bees at Koh Racha Yai offers a diverse underwater landscape featuring a combination of reef, wall, pinnacle, and cave formations. Accessible only by boat, the site is suitable for beginners, with depths ranging from 10 to 30 metres and an average depth of 20 metres. Visibility typically spans 15 to 30 metres, and currents are generally mild. Water temperatures remain between 28 and 30 degrees Celsius, though cold water intrusions of 25 degrees Celsius can occur in February and March. Night diving is available, and divers should be mindful of boat traffic, sharp coral, sea urchins, and stonefish while maintaining proximity to their guide.

Koh Hey, also known as Coral Bay, is a shallow reef site located off Koh Racha Yai. The reef features depths ranging from 2 to 13 metres, with an average depth of 8 metres, making it suitable for beginners. Access is by boat, and the site experiences mild currents. Visibility typically fluctuates between 5 and 15 metres. Water temperatures remain warm throughout the year, between 29 and 31 degrees Celsius. Divers and snorkellers should be cautious of sharp coral and rocks; avoid touching the bottom or using the reef for support. Wearing fin booties or water shoes is recommended for protection.

Koh Racha Yai offers a diverse underwater environment featuring a combination of natural reefs, wrecks, and artificial reef structures. Located in the Andaman Sea, this site is accessible only by boat and is suited for intermediate divers. Depths range from 3 to 30 metres with an average of 15 metres. Divers should be prepared for moderate currents that can shift in direction and strength. Visibility fluctuates between 5 and 25 metres, while water temperatures remain warm, typically between 28 and 30 degrees Celsius. Due to active boat traffic, divers must deploy a marker buoy before ascending. Always maintain buoyancy to avoid contact with sharp coral and rocky structures.

Koh Racha Yai is a boat-access site located 25 kilometres from shore, offering a varied underwater landscape that includes natural reefs, artificial reefs, walls, and wrecks. The site spans depths from 3 to 60 metres, with an average depth of 20 metres. Divers encounter mild currents that can strengthen unexpectedly, and visibility typically ranges between 15 and 40 metres. Due to the potential for fluctuating visibility and shifting currents, particularly on wall sections where depth can increase rapidly, this site is suited for intermediate divers. Water temperatures remain between 26 and 30 degrees Celsius. Guided tours, equipment rental, and air fills are available for standard 60-minute dives.