HTMS Sattakut is a 48-metre-long wreck resting at a maximum depth of 35 metres, with the top of the tower reaching 18 metres. Located 800 metres from Koh Nang Yuan, this artificial reef requires boat access. Divers encounter species including rock cod, wrasses, bluespotted fantail rays, blue ringed angelfish, porcupinefish, groupers, white eyed morays, magnificent giant anemones, pink skunk anemonefish, longfin bannerfish, golden butterflyfish, sling-jaw wrasse, zoanthids, and soft coral. Conditions feature mild currents and visibility ranging from 3 to 30 metres. Due to the depth and overhead environment, this site is suited for advanced divers. Hazards include decompression, nitrogen narcosis, and thermoclines.

White Rock is a reef and pinnacle site located 2000 metres from the shore of Koh Nang Yuan. The site features a depth range of 1 to 28 metres, with an average depth of 15 metres. Divers can expect mild currents and visibility ranging from 10 to 25 metres. Marine life commonly encountered includes Blue Ringed Angelfish, Titan Triggerfish, Bluespotted Fantail Ray, wrasses, Rock Cod, Blue-barred Parrotfish, Blacktip Grouper, Pink Skunk Anemonefish, Sling-jaw Wrasse, Golden Butterflyfish, and Longfin Bannerfish. Harlequin Sweetlips, porcupinefish, and groupers are also present. The site is suitable for beginners and supports night diving. Boat access is required, and divers should be aware of boat traffic, sharp coral, and triggerfish.

Twin Peaks is a reef site located at Koh Nang Yuan, Thailand, offering a shallow dive experience suitable for beginners. The site features depths ranging from 5 to 20 metres, with an average depth of 10 metres. Divers can access the reef directly from the shore. Conditions are generally mild, with visibility fluctuating between 5 and 20 metres. Marine life is diverse, with common sightings including Blue Ringed Angelfish, Bluespotted Fantail Ray, Titan Triggerfish, and various wrasses. Other frequent inhabitants include groupers, Blacktip Grouper, Blue-barred Parrotfish, Longfin Bannerfish, Golden Butterflyfish, Sling-jaw Wrasse, and Pink Skunk Anemonefish. Harlequin Sweetlips and porcupinefish are also recorded here.

Bio Rock is an artificial reef located 250 metres off the shore of Koh Nang Yuan. This site features depths ranging from 5 to 15 metres, with an average depth of 13 metres. It is suitable for beginners and accessible via boat. Divers can expect mild currents and visibility between 10 and 25 metres. Marine life frequently encountered includes Titan Triggerfish, Bluespotted Fantail Ray, Blue Ringed Angelfish, and various wrasses. Other species such as Harlequin Sweetlips, Golden Butterflyfish, Pink Skunk Anemonefish, and groupers are also present. Hazards at this site include boat traffic, sharp coral, and stonefish. Water temperatures remain warm throughout the year, typically between 28 and 31 degrees Celsius.

Sairee Reef, located off Koh Nang Yuan, provides a shallow, accessible environment for beginner divers. The site features depths between 5 and 12 metres, averaging 8 metres, with mild currents. Visibility varies from 5 to 25 metres. Divers can observe wrasses, which are common, alongside uncommon species including golden butterflyfish, longfin bannerfish, blue-barred parrotfish, coral trout, pink skunk anemonefish, rock cod, rabbitfish, sergeants, hard coral, and snails. Entry is from the shore, though divers must navigate a shore break and watch for active boat traffic. Using a surface marker buoy is recommended for safety. The site is suitable for night diving, with water temperatures consistently ranging from 28C to 31C.

Ban's Artificial Reef at Koh Nang Yuan is a diverse artificial reef and coral transplant site featuring a wide array of submerged structures. Divers can explore a buoyancy obstacle course, a school house, and various sculptures including a whaleshark, a turtle, rays, and farm animals, alongside sunken vehicles. The site offers depths ranging from 2 to 40 metres, with an average depth of 8 metres. Suitable for beginners, the site experiences mild currents and visibility between 5 and 30 metres. Access is available by both shore and boat. Facilities include equipment rental, air fills, and rinse stations, making it a well-supported location for divers.

Junkyard is an artificial reef located 500 metres off Koh Nang Yuan. This site features a mix of structures and wrecks, offering a varied topography that reaches depths between 3 and 32 metres, with an average depth of 9 metres. Divers can encounter wrasses, rabbitfish, rock cod, golden butterflyfish, sling-jaw wrasse, pink skunk anemonefish, coral trout, longfin bannerfish, barred soapfish, scissortail sergeant, sea cucumbers, snails, and long-spined sea urchins. Conditions are generally mild, though visibility fluctuates between 2 and 30 metres. Access is by boat only. The site is suitable for beginners and supports night diving, with water temperatures ranging from 27 to 31 degrees Celsius.

Boyancy, also known as Buoyancy World, is an artificial reef project situated off the west coast of Koh Nang Yuan near Koh Tao. This site features a series of structures designed to support reef development and provide buoyancy training opportunities. Divers can explore the area at depths ranging from 5 to 20 metres, with an average depth of 10 metres. Access is by boat only, and the site is suitable for beginners. Conditions generally feature mild currents and visibility between 5 and 25 metres. Hazards include boat traffic, jellyfish, sea urchins, sharp coral, stonefish, and triggerfish. The site is supported by local facilities offering air fills, equipment rental, and guided tours.