South Tip at Koh Racha Noi is a reef and drop-off site characterised by its topography and potential for strong currents. The site offers a wide depth range from 3 to 80 metres, with an average depth of 12 metres. Access is strictly by boat, and the site is suited for intermediate divers due to the challenging current conditions. Visibility varies between 10 and 40 metres. Species recorded around this area include Indian Lionfish, Moorish Idol, Porcupinefish, Peacock Mantis Shrimp, and Giant Moray. Facilities available for divers include air fills, equipment rental, and guided tours.

Banana Bay at Koh Racha Noi offers a diverse underwater landscape featuring reefs, pinnacles, walls, and drift sections. Suitable for all skill levels, the site provides depths ranging from 2m to 45m with an average of 15m. Divers and snorkellers can expect visibility between 10m and 30m, with mild currents typical of the area. Access is strictly by boat, located 20km from the shore. Water temperatures remain warm, generally between 29C and 31C. Hazards to be aware of include boat traffic, potential entanglement, sharp coral, stonefish, and strong currents. Guided tours and boat charters are available for those visiting this site.

Marina Bay and the adjacent Marita’s Rock at Koh Racha Noi offer a topography defined by granite rock formations that extend from the hillside into the water. Divers navigate a series of swim-throughs and cavernous structures that follow the underwater contours of the island. The site reaches depths between 5 and 40 metres, with an average depth of 21 metres. Access is exclusively by boat, and the site is suited for intermediate divers due to moderate currents and potential surge. Visibility ranges from 10 to 40 metres, and water temperatures remain consistent between 29 and 31 degrees Celsius throughout the year.

Camera Bay, located on the north-western section of Koh Racha Noi, offers a diverse diving environment ranging from 5 to 30 metres. The site features a mix of natural reef and artificial structures. The inner bay is typically calm and free of currents, making it suitable for beginner divers. Beyond the bay, the topography transitions to rocky edges where divers may encounter mild currents and drift conditions. Visibility at this site ranges from 10 to 40 metres, with water temperatures consistently between 29 and 31C. Access to Camera Bay is by boat only.

Koh Racha Noi offers diverse topography including reefs, walls, pinnacles, and drop-offs. The site features a shallow bay ranging from 3 to 10 metres, suitable for training, while the outer sloping reef extends to depths of 30 metres. Accessible only by boat, the site is suited for intermediate divers due to moderate currents and potential down currents. Visibility typically ranges from 10 to 40 metres, though thermoclines can occasionally affect clarity. Water temperatures remain warm, averaging between 28 and 30 degrees Celsius. Species recorded around this area include various reef fish, moray eels, and triggerfish. Divers should be aware of deep water and strong currents.

Ashitol Bay is a reef dive located at Koh Racha Noi, Thailand, accessible only by boat from Koh Phuket. The site features depths ranging from 15 to 30 metres, making it suitable for divers with an Open Water certification. Divers can expect mild currents and visibility between 10 and 25 metres. Water temperatures typically range from 29 to 31C, though the area can experience thermoclines, so a wetsuit is recommended. A typical dive lasts approximately 45 minutes. As conditions can vary, it is advisable to check locally for current boat schedules and seasonal variations before planning a trip.

Aussie Reef at Koh Racha Noi is a drift dive site featuring hard corals in the shallows and deep coral bombies. The site offers depths ranging from 3 to 30 metres, with an average depth of 15 metres. Access is by boat only, as the site is located 24 kilometres from shore. Divers should be prepared for moderate currents and variable visibility between 10 and 30 metres. Due to the potential for strong currents, surf, and deep water, this site is suited for intermediate divers. Water temperatures remain consistent throughout the year, typically between 28 and 30 degrees Celsius.

Manta Bay at Koh Racha Noi offers a diverse underwater environment featuring a reef, wall, and artificial reef. Suitable for beginners, the site reaches depths of 3 to 17 metres with an average of 15 metres. Access is by boat only. Visibility varies significantly from 10 to 40 metres. While currents are generally mild, divers should remain alert for occasional down currents. Species recorded around this area include peacock mantis shrimp, giant moray, Indian lionfish, pharaoh cuttlefish, sea krait, snowflake moray, zebra lionfish, reef stonefish, coral grouper, titan triggerfish, spotfin lionfish, moorish idol, porcupinefish, and melon butterflyfish. Always monitor for jellyfish and exercise caution near the seabed to avoid stonefish.