Kata Reef at Koh Racha Yai is a shore-accessible site featuring a combination of natural reef, artificial reef structures, and wall topography. Located 50 metres from the shore, the site offers shallow diving with depths ranging from 2 to 15 metres and an average depth of 9 metres. Conditions are generally mild, though divers should be aware of potential surf, surge, and variable visibility between 3 and 20 metres. The site is suitable for beginners and supports night diving, with typical dive times around 60 minutes. Facilities available nearby include equipment rental, air fills, and guided tours.

Karon Beach at Koh Racha Yai offers a shallow reef environment suitable for beginners, with depths ranging from 3 to 8 metres and an average of 5 metres. Access is via a shore entry, making it convenient for both divers and snorkellers. Conditions are generally mild, though visibility can fluctuate between 8 and 30 metres. Divers should be aware of potential hazards including rip currents, surf, jellyfish, sea urchins, and sharp coral. Thermoclines may occur, occasionally bringing cooler water temperatures than the typical 29 to 30 degrees Celsius. The site supports night diving and is well-serviced by local facilities including equipment rental, air fills, and rinse stations.

Dive Asia is a reef and pinnacle site located off Koh Racha Yai, Thailand. The site offers depths ranging from 8 to 30 metres, with an average depth of 15 metres. Access is by boat, and the site is suited for intermediate divers comfortable with moderate currents. Visibility varies between 5 and 25 metres. Divers should be aware that strong currents can develop quickly, particularly in deeper sections. The site features an on-site dive shop providing equipment rental and air fills. Typical dive times are approximately 45 minutes. Divers are advised to monitor their position against the reef and use an SMB when surfacing due to boat traffic.

Karon Rock at Koh Racha Yai is a reef and pinnacle site featuring a boulder formation. The site ranges in depth from 6m to 19m, with an average depth of 12m. It is accessible by boat and is suitable for beginner divers, including those completing Open Water or Advanced courses. Conditions include mild currents and visibility ranging from 8m to 30m. Water temperatures remain consistent between 28C and 30C throughout the year. The site is open to night diving and is typically explored on 50-minute dives. Divers should be aware of potential hazards including boat traffic, entanglement risks, and sharp coral.

South Point at Koh Racha Yai offers reef diving for intermediate divers, with depths ranging from 8 to 25 metres. The site is accessed by boat and features moderate currents that can strengthen quickly, requiring good buoyancy control. Divers can explore the reef structure, which provides shelter from water movement. Marine life recorded at this site includes the laced moray, wrasses, vagabond butterflyfish, porcupinefish, crabs, azure sea stars, sergeants, rabbitfish, and various snails. Visibility typically spans 15 to 30 metres. Due to the current patterns, booking a guided tour is recommended to ensure safe entry and drift planning.

Sub Aqua at Koh Racha Yai offers a diverse underwater landscape featuring a combination of reef, pinnacle, wall, and artificial reef structures. Located 2000 metres from shore, this site requires boat access and is suited for intermediate divers. Depths range from 8 to 30 metres, with an average of 15 metres. Visibility typically spans 10 to 30 metres. Divers should be prepared for moderate currents that can strengthen quickly, requiring good buoyancy control. The site is also suitable for night diving. Facilities available include toilets, showers, and a rinse station. Water temperatures remain consistent between 28 and 30C throughout the year.

Nui Beach on Koh Racha Yai offers a reef environment suitable for beginners, with depths ranging from 5 to 18 metres and an average of 10 metres. Access is via the shore, and the site features a beach club with toilets, showers, and a cafe. Divers and snorkellers should be aware of potential hazards including surf, jellyfish, sea urchins, sharks, and variable visibility between 5 and 15 metres. Currents are generally mild. Species recorded around this area include the black-orange dragonet, laced moray, titan triggerfish, checkerboard wrasse, white-eyed moray, powder-blue surgeonfish, brown butterflyfish, striped surgeonfish, white-spotted puffer, scorpionfish, bluespine unicornfish, blue-spotted urchin, snake eel, and dotted anemone crab.

Meridian Beach is a shore-entry reef dive located on Koh Racha Yai. The site features depths ranging from 3 to 12 metres, with an average of 7 metres, making it suitable for beginners. Divers experience mild currents and visibility between 5 and 15 metres. The reef structure supports hard and soft corals. Facilities on site include air fills and guided tours. The location is also suitable for night diving, which allows for different observations of the reef environment. When entering or exiting the water, shuffle your feet along the seabed to avoid stonefish that may be camouflaged on the bottom.