Turtle Ledge is a reef site located at Richelieu Rock in the Andaman North region of Thailand. Accessible only by boat, the site features depths ranging from 5 to 30 metres, with an average depth of 18 metres. Divers and snorkellers can expect mild currents and visibility between 10 and 30 metres. Water temperatures remain consistent, typically between 28 and 31 degrees Celsius. The site is suitable for beginners and supports night diving. Hazards include boat traffic and the potential for strong currents. Typical dives last approximately 50 minutes.

Tao Bay is a shore-entry dive site located at Richelieu Rock in the Andaman North region of Thailand. The site features shallow, calm water, making it a practical location for those new to diving. Water temperatures remain warm throughout the year, typically ranging between 28 and 31 degrees Celsius. Divers should be aware that currents at this site are variable and can shift throughout the day. It is recommended to check local conditions before entering the water. As a shore-entry site, it allows divers to manage their own pace, though visitors should verify available facilities on-site prior to arrival.

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.

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.

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.

Hin Kong is a reef dive site located near Koh Surin, Thailand. The topography consists of hard corals extending from shallow depths down to 30 metres, with an average depth of 15 metres. This site is suitable for beginners, who can remain in the shallower 5 to 10 metre range to build confidence. Access is by boat only, and divers should be prepared for moderate currents that can shift quickly. Visibility typically ranges between 10 and 30 metres. Divers should exercise caution regarding stonefish on the bottom and maintain close proximity to their guide due to variable current and visibility conditions.

Ao Park Gard is a reef site located at Richelieu Rock in the Andaman North region of Thailand. Accessible only by boat, the site features depths ranging from 5 to 20 metres with an average depth of 20 metres. Divers and snorkellers can expect mild currents and visibility between 5 and 10 metres. The water temperature remains warm, typically between 28 and 31 degrees Celsius. The site is suitable for beginners and supports night diving, with typical dive durations of 60 minutes. Hazards include sharp coral. Species recorded around this area include various angelfish, wrasses, parrotfish, and moray eels.