Walkers Reef is a marine site located at Richelieu Rock, Thailand. This reef site is accessed exclusively by boat and is suited for intermediate divers. The site maintains an average depth of 11 metres, with visibility typically ranging between 10 and 25 metres. Divers should be aware of moderate currents and potential hazards including boat traffic and sharp coral. Water temperatures remain warm throughout the year, fluctuating between 28C and 31C. A typical dive at this location lasts approximately 45 minutes.

Ao Chak is a reef dive site in the Andaman Sea, accessible only by boat. The reef structure extends from shallow depths down to 35 metres, with an average depth of 12 metres. The topography features staghorn, branch, and bush corals. Visibility varies between 5 and 30 metres, and water temperatures remain warm, ranging from 28 to 31 degrees Celsius. While currents are generally mild, they can strengthen unexpectedly. Divers should maintain a safe distance from the reef to avoid sharp coral. Guided tours are recommended for navigation, as conditions can shift and local knowledge assists in locating resting areas.

Hin Kop is a boat-access site near Koh Surin featuring a combination of a shallow reef top, a vertical wall, and a deeper pinnacle that descends to 30 metres. Divers typically experience depths between 5 and 30 metres with an average of 15 metres. Visibility ranges from 10 to 30 metres, and water temperatures remain between 28 and 31 degrees Celsius. While currents are generally mild, they can strengthen around the pinnacle and wall with little warning. Divers should maintain proximity to the reef structure for shelter. This site is suited for intermediate divers who possess good buoyancy control and situational awareness.

Ao Mae Yai is a shallow reef site in the Andaman Sea, ideal for beginners and those building underwater confidence. The site features depths between 5 and 15 metres with an average of 10 metres. Divers experience mild currents and visibility ranging from 10 to 30 metres. The reef structure supports a variety of corals, including black, table, disc, lettuce, branch, and soft corals. Reef fish, crustaceans, and various invertebrates inhabit the reef. Access is by boat only, and divers should be aware of boat traffic. Always deploy a surface marker buoy when surfacing and remain with your guide to ensure visibility to passing vessels.

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.

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.

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.

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.