Staghorn Reef at Koh Racha Yai features a combination of a shallow reef top and a wall that descends to 30 metres. With an average depth of 18 metres, the site offers varied topography for intermediate divers. Access is by boat, and conditions include moderate currents and visibility ranging from 8 to 25 metres. Divers should be aware of potential surge and swell, which can push toward sharp coral. Due to the presence of sharks and currents that can strengthen quickly, maintaining good buoyancy and staying close to your group is essential. The site is best suited for those comfortable with drift diving and managing changing water conditions.

Ao Yon Beach on Koh Racha Yai offers a shallow reef environment suitable for both diving and snorkelling. The site features depths ranging from 2 to 10 metres, with an average depth of 6 metres, making it well-suited for beginners and training courses. Divers can expect mild currents and visibility between 5 and 25 metres. Entry is directly from the shore, and the site supports long dives typically lasting 60 minutes. Night diving is also available. Facilities at the location include toilets, showers, a dive shop, boat charter services, and a cafe. Be aware of potential hazards including jellyfish and sharp coral when entering or exploring the reef.

Merlin House Reef at Koh Racha Yai offers a gentle environment for both diving and snorkelling. The site features a reef structure extending from the shallows to a maximum depth of 11 metres, with an average depth of 10 metres. Entry is made directly from the shore. Conditions are generally mild, with visibility ranging between 5 and 15 metres and water temperatures consistently between 29 and 30 degrees Celsius. Divers and snorkellers should exercise caution regarding sharp coral, rocks, and sea urchins when entering the water. Guided tours and equipment rental services are available on site to assist with navigation and gear requirements.

Freedom Beach is a shallow reef site located 1500 metres from the shore of Koh Racha Yai. Suitable for beginners, the site features depths ranging from 2 to 10 metres with mild currents. Visibility varies significantly between 5 and 25 metres, often improving in the morning before boat traffic increases. Divers and snorkellers should remain aware of active boat traffic and use a signal device upon ascent. The reef contains sharp coral and rock formations, so buoyancy control is essential to avoid injury. Access is exclusively by boat, with equipment rental, showers, and toilets available nearby.

Paradise Deep Rock is a drift dive site located 5000 metres offshore from Koh Racha Yai. The topography consists of reef structures and rock faces reaching depths of 12 metres. Divers must be prepared for strong currents that require solid buoyancy control and a pre-arranged boat pick-up plan. Visibility at the site typically ranges between 10 and 30 metres, with water temperatures averaging 29 to 30 degrees Celsius, though occasional cold thermoclines occur. Due to the challenging current conditions and the presence of sharp coral on the rock faces, this site is suitable only for advanced divers.

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.

Nakaley is a shore-entry reef site located at the Racha Islands, offering a shallow environment suitable for beginners. Divers typically explore depths between 2 and 12 metres, with an average depth of 7 metres. The site features mild currents and visibility ranging from 5 to 25 metres. Entry requires caution due to surf and shore break conditions; divers should move through the shallows quickly and shuffle their feet. The reef structure provides a habitat for various reef fish and invertebrates. Facilities including showers and changing rooms are available on-site. This location is also suitable for night diving, with typical dive durations of 45 minutes.

Tai Pau is a reef dive located 3000 metres from shore, offering depths between 4 and 18 metres with an average of 12 metres. The site features mild currents and visibility ranging from 5 to 30 metres. Water temperatures remain consistent between 28 and 30C throughout the year. Divers should exercise caution regarding sharp coral and rocks when maintaining buoyancy. Blue spotted stingrays are frequently found resting on sandy patches near the reef edge. Guided tours are available and recommended for beginner divers. Species recorded around this area include various moray eels, groupers, wrasses, and butterflyfish.