This dive site is located on the east side of Nan Yuan Island, adjacent to Koh Tao. The sandy area off the island gradually gets deeper and deeper, and you can wall dive along the island to the north. The shallow waters are home to a wide variety of coral species, and you'll be able to observe coral species such as spoonbills that live in harmony with the coral. Even on days with strong westerly winds, you can dive in the shadows of the island in a calm environment.

One of Koh Tao’s few ’drift’ dive sites, Green Rock often features a noticeable current, albeit a rarely overpowering one. The depth ranges between 10 and 25 meters and 30 to 40 meters depth can be found with a short swim to the West.

This dive site is located next to the "Twins" dive site on the west side of Nan Yuan Island, adjacent to Koh Tao. It is a calm sandy area with a variety of objects to practice neutral buoyancy at a depth of 5 to 18 meters, so it is often used for training.

Located on the east side of Nan Yuan Island, adjacent to Koh Tao, this dive site is named "Twins" because it is composed of two very similar roots. In the shallow waters above Nan Yuan, branch corals are growing beautifully. This is a popular dive site for beginners and seasoned divers alike, as it has a wide range of depths from 5 to 20 meters or more, with the first and second roots and a calm sandy area off the island.

Classic pinnacle off of Twins (another dive site) but much less divers than Twins due to its location being slightly deeper. Quite fun to dive for advanced divers.

Lying just 15M north of No Name Pinnacle, this newly sunk wreck is 44.9M long, 7M wide, is a high speed attack ship. Belonging to the Gulf Patrol Fleet, Royal Thai Navy and built by Singapore Ship Building and Engineering Company Limited.

White Rock, also known as White Rock and Black Rock, is located to the south of Nan Yuan Island, adjacent to Koh Tao. The whole site is a fairly large root, so no matter how many dives you do, you will never get bored of it, depending on the course you take, the depth and the type of life you observe. Beginners and seasoned divers alike should enjoy it.

This is a wreck dive site where a Royal Thai Navy warship lies submerged just off the side of Himpi Wee, a dive site south of Nang Yuan Island adjacent to Koh Tao. The warship lies on the bottom of the water at a depth of about 30 meters and the bridge is at a relatively deep point, about 18 meters. This is a popular dive site that is sure to look great on Instagram.

Large rock formations and smaller pinnacles (shallowest point is about 7m). Lots of soft corals and whip corals. Gets to 22m+. Not a lot to see if limited to 12m. Next HTMS Sattakut wreck and can both be dived in the same dive.

This is a great sight for training dives as there is a big sandy area ranging from 1m to 16m deep. Two different areas with huge artificial reef concrete cubes are good for buoyancy or technical training.