Freedom Beach is a shallow reef located at the southern tip of Koh Nang Yuan. Divers and snorkellers can access this site directly from the shore. The reef, situated near Buddha Rock, reaches depths between 2 and 14 metres with an average of 7 metres. Conditions are generally mild, though visibility fluctuates between 5 and 20 metres. Marine life frequently observed includes Titan Triggerfish, Longfin Bannerfish, Golden Butterflyfish, and Blue-barred Parrotfish. Divers may also encounter Bluespotted Fantail Rays, Blue Ringed Angelfish, and various wrasses. Hazards at this site include jellyfish, sharks, and sharp coral. Facilities available include toilets, showers, and gear storage.

Chalok Bay is a shore-entry reef dive located at Koh Nang Yuan, suitable for beginner divers. The site features depths ranging from 5 to 14 metres, with an average of 10 metres. Divers experience mild currents and visibility typically between 10 and 20 metres. Water temperatures remain warm throughout the year, ranging from 28 to 31 degrees Celsius. Hazards include jellyfish, sea urchins, sharp coral, and potentially aggressive triggerfish. Divers should shuffle through the shallows to avoid urchins and maintain awareness of their surroundings. Facilities at the site include parking, toilets, showers, rinse stations, equipment rental, and air fills.

Shark Bay at Koh Nang Yuan is a shallow reef and seagrass site suitable for both diving and snorkelling. The site features depths ranging from 3 to 8 metres, with an average depth of 5 metres. Access is via the shore, and conditions are generally mild, though visibility can fluctuate between 5 and 30 metres. The area is well-suited for beginners and supports night diving. Facilities available at the location include parking, toilets, and a cafe. Divers and snorkellers should remain aware of potential hazards, including boat traffic, jellyfish, and sharp coral.

June Juea Bay is a quiet, secluded reef site located on Koh Nang Yuan. The site features a shallow reef structure with depths ranging from 2 to 12 metres, averaging 7 metres. It is accessible via shore entry and is suitable for beginners. Divers and snorkellers can expect mild currents and visibility typically between 10 and 25 metres. Water temperatures remain warm throughout the year, generally between 28 and 31 degrees Celsius. The site is suitable for night diving, with a typical dive duration of 45 minutes. Facilities at the location include a cafe. Be aware of sharp coral when entering or navigating the reef.

Laem Thian is a diverse marine site featuring a combination of reef, cave, and drop-off topography. Located near Koh Nang Yuan, the site offers depths ranging from 5 to 24 metres with an average of 15 metres. Access is exclusively by boat. Divers and snorkellers should be prepared for moderate currents and potential surge, as well as deep water. Visibility at the site typically fluctuates between 10 and 30 metres. Water temperatures are consistent, ranging from 28 to 31 degrees Celsius throughout the year. Due to the prevailing conditions and depth, this site is best suited for intermediate-level divers.

Tao Tong is a mixed-environment site located at Koh Nang Yuan, Thailand, featuring a combination of muck substrate, artificial reef structures, and natural reef. With depths ranging from 5 to 9 metres, it is well-suited for beginner divers. The site experiences mild currents and visibility typically between 10 and 20 metres. Divers should be aware of entanglement risks posed by artificial reef structures and exercise caution around blue ringed octopus. Night diving is available at this location. Access is by boat only, and the use of a torch is recommended to observe small creatures within the muck substrate.

Sai Daeng Beach is a shore-access reef site located on Koh Nang Yuan, Thailand. The site features a shallow average depth of 4 metres, ranging between 2 and 6 metres, making it suitable for beginners and snorkellers. Divers and snorkellers can observe a variety of marine life, including common sightings of Titan Triggerfish, wrasses, Longfin Bannerfish, Golden Butterflyfish, and Blue-barred Parrotfish. Uncommon species recorded here include Bluespotted Fantail Ray, Blue Ringed Angelfish, Pink Skunk Anemonefish, and Blacktip Grouper. The site offers visibility between 10 and 30 metres with mild currents, though users should remain aware of potential strong currents. Facilities include parking, toilets, equipment rental, and a cafe.

Hin Ngam, located off Koh Nang Yuan, features three distinct pinnacles set against a sandy seabed. This site offers a mix of coastal reef exploration and navigation between scattered pinnacles, with depths ranging from 5 to 18 metres. Divers and snorkellers frequently encounter Titan Triggerfish, wrasses, Longfin Bannerfish, Golden Butterflyfish, and Blue-barred Parrotfish. Other species present include Bluespotted Fantail Rays, Blue Ringed Angelfish, Harlequin Sweetlips, Scrawled Filefish, and Pink Skunk Anemonefish. Conditions are generally mild with visibility between 10 and 25 metres. Hazards include boat traffic, sharp coral, and the presence of triggerfish and stonefish. The site is accessible by boat or from the shore and is suitable for beginners.