Hin Pratumba is a reef dive located near Richelieu Rock in Thailand. The site features depths ranging from 18 to 30 metres, with an average depth of 18 metres. Divers can expect mild currents and visibility typically between 15 and 30 metres. Water temperatures remain warm throughout the year, fluctuating between 28C and 31C. Due to potential surge, which can push divers toward the reef structure, maintaining neutral buoyancy is essential. Guided tours are recommended for first-time visitors to help navigate the reef layout effectively. Divers should remain cautious of stonefish and lionfish resting on or near the reef, and avoid touching coral surfaces for stability.

Moken Bay at Richelieu Rock provides a gentle environment for reef and muck diving. The site features a mix of hard and soft corals interspersed with sandy patches, with depths ranging from 8 to 18 metres. Visibility varies between 10 and 30 metres, and the mild current allows for slow exploration of the reef structure. This site is suitable for beginners and is accessed exclusively by boat. Divers should remain mindful of sharp coral to avoid contact and must check for boat traffic before surfacing. Typical dives last approximately 45 minutes, offering a steady pace to observe the diverse marine life inhabiting the coral heads and sandy substrate.

Koh Bon is a sheltered reef site in the Andaman Sea, offering a manageable environment for beginner divers. The reef structure extends from a shallow depth of 2 metres down to 18 metres, with an average depth of 8 metres. Divers can expect mild currents and visibility ranging from 5 to 25 metres. The site features diverse coral formations, including soft, table, branch, black, lettuce, and disc corals. Access is by boat only, with dives typically lasting 45 minutes. Water temperatures remain consistent between 28 and 31 degrees Celsius. Divers should remain cautious of sharp coral edges, jellyfish in the water column, and stonefish camouflaged against the reef surface.

Ao Sapparot is a reef site in the Andaman Sea featuring coral patches that reach depths between 2 and 21 metres, with an average depth of 8 metres. The site is accessible by boat and offers mild currents, making it suitable for beginners. Visibility typically ranges from 5 to 15 metres, and water temperatures remain warm throughout the year. Divers and snorkellers should exercise caution regarding sharp coral and submerged rocks, particularly in shallower sections. The site is also available for night diving, which can be rewarding for observing nocturnal activity. A torch is recommended for daytime dives to explore the shadows within the coral patches.

J-Spot is a reef dive site located 2000 metres from shore at Richelieu Rock. The site features hard coral structures and ranges in depth from 5 to 21 metres, with an average depth of 12 metres. It is accessible by boat and is suitable for beginners due to the mild currents. Visibility typically ranges between 15 and 25 metres, and water temperatures remain warm throughout the year. Divers are encouraged to explore the shallower sections of the reef during safety stops, where small invertebrates often inhabit the coral rubble.

Prebens Platon is a pinnacle and reef site located at Richelieu Rock, Thailand. This advanced dive site features depths ranging from 12 to 40 metres, with an average depth of 22 metres. Divers must access the site by boat. Conditions are characterised by strong currents, making drift diving the standard practice. Visibility typically fluctuates between 10 and 25 metres. Water temperatures range from 28 to 31C, though cold thermoclines may occur. Due to sharp coral and unpredictable currents, divers should remain close to their guide and avoid contact with the reef structure. Facilities at the site include showers.

Aow Suthep is a reef site located at Richelieu Rock, Thailand, offering a varied topography suitable for beginners. Divers and snorkellers can explore depths ranging from 3 to 30 metres, with an average depth of 15 metres. The site is accessible only by boat and features mild currents, making it a manageable location for those newer to the water. Visibility typically spans 10 to 25 metres, providing clear views of the reef structure and hard corals. To fully appreciate the site, maintain a slow pace to observe the reef inhabitants closely. Water temperatures remain consistent throughout the year, ranging between 28 and 31 degrees Celsius.

Richelieu Rock is a prominent submerged pinnacle located in the Andaman North region of Thailand. This reef site features a depth range of 5 to 30 metres, with an average depth of 15 metres. It is suitable for intermediate divers and snorkelers, though access requires a boat due to its distance from the shore. Conditions vary, with visibility typically ranging from 10 to 30 metres and moderate currents present. Hazards include boat traffic, potential for low visibility, and strong currents. Guided tours and boat charters are available for those visiting this site, which also supports night diving.