East Cape at Koh Racha Yai offers a straightforward reef dive suitable for beginners. The site features depths ranging from 5 to 15 metres with mild currents. Visibility varies significantly, ranging from 5 to 25 metres depending on conditions. Access is by boat only, and divers should be aware of boat traffic in the area. It is recommended to arrive early in the morning to avoid congestion from day-trip vessels. When surfacing, always listen for boat traffic and remain close to your guide. Use a surface marker buoy to ensure visibility to boat operators when ascending.

Coral Island, located near Koh Racha Yai, offers a reef dive suitable for beginners. The site features depths ranging from 2 to 20 metres, with an average depth of 10 metres. Divers access the reef by boat, encountering mild currents and water temperatures between 29 and 31 degrees Celsius. Visibility typically spans 5 to 15 metres, though it can fluctuate with little warning. On-site facilities include a dive shop, cafe, and showers. Due to variable visibility, divers should consult local staff regarding current conditions before entry. Morning departures are recommended to experience calmer surface conditions before increased boat traffic.

Bungalow Bay at Koh Racha Yai offers a diverse underwater environment featuring a mix of natural reef, artificial reef structures, and wreck sites. Suitable for beginners, the site ranges from 5 to 25 metres in depth with an average of 15 metres. Access is exclusively by boat. Conditions are generally mild, though visibility fluctuates between 8 and 25 metres. Divers should be aware of boat traffic and sharp coral. Species recorded around this area include various moray eels, lionfish, cuttlefish, and wrasses. Typical dives last approximately 50 minutes in water temperatures ranging from 28 to 31 degrees Celsius.

Barracuda Rock is a submerged pinnacle located off Koh Racha Yai, Thailand. This advanced drift dive ranges from 5 to 30 metres in depth, with an average of 15 metres. The site features a structure covered in hard and soft corals and sea fans. Due to the location, strong currents are common and can accelerate quickly around the pinnacle. Visibility is variable, ranging from 5 to 25 metres. Divers must use boat access to reach this site. Night diving is permitted. Given the potential for strong currents, low visibility, and sharp coral, this site is suited for experienced divers who can manage their position and maintain group contact.

Koh Dok Mai is a limestone island featuring a vertical wall, reef, and cavern topography. Reaching depths of 32 metres with an average of 18 metres, this site requires boat access and is suited for intermediate divers due to strong currents. Visibility varies between 5 and 20 metres. The site offers opportunities for night diving, with guided tours available. Species recorded around this area include various moray eels, wrasses, lionfish, and ghost pipefish. Divers should be aware of potential hazards including deep water, overhead environments, and thermoclines.

Bungalow Bay at Koh Racha Yai offers a diverse underwater environment featuring a natural reef, artificial reef structures, and a wreck. Suitable for beginners, the site ranges from 5 to 25 metres in depth with an average of 15 metres. Divers and snorkellers can access the site by boat or from the shore. Conditions are generally mild with visibility varying between 8 and 25 metres. Water temperatures remain warm throughout the year, typically between 28 and 31 degrees Celsius. Species recorded around this area include various moray eels, wrasses, and butterflyfish. Be aware of boat traffic in the area and sharp coral when navigating the reef.

Buddha Island, also known as Koh Kaeo, is a reef site located 8 kilometres from Koh Racha Yai. The topography consists of rock formations covered in both soft and hard corals. This site is suited for advanced divers due to the presence of strong currents. Divers access the site by boat, with depths ranging from 8 to 15 metres and an average depth of 12 metres. Visibility at the site varies significantly, fluctuating between 2 and 15 metres. Water temperatures remain consistent throughout the year, typically between 29 and 31 degrees Celsius.

South Tip at Koh Racha Yai is a diverse site featuring a mix of reef, wall, and artificial structures. Divers and snorkellers can explore depths ranging from 5 to 25 metres, with an average depth of 15 metres. The site is accessible only by boat and is suitable for beginners, though conditions include moderate currents. Visibility typically spans 10 to 30 metres. Water temperatures remain consistently warm, between 29 and 31 degrees Celsius throughout the year. Night diving is available at this location. Hazards to be aware of include boat traffic, jellyfish, and sharp coral. Comprehensive facilities are available, including equipment rental, air fills, and guided tours.