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.

Hin Wong Pinnacle ranges between 10 and 40 meters in depth, meaning divers of all experience levels can enjoy this site. Currents can be present, though rarely particularly strong.

Sloping fringe reef. Lots of hard coral and coral bommies. Not many sandy areas for skills except in the far west side of site. Shallow snorkelling area . Lots of artificial reef cubes at about 14m.

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.

Big swim through available to advanced freedivers, very nice and different from most of the other dive sites around. Coral reef available outside of that cave for less experienced divers.

Mao Bay can be explored to the south as well as towards north. Toward the north you will find an artificial reef at 15m deep. Besides this, large boulders are very characteristic for this area.

Just on the mouth of the bay, 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 Co., Ltd.

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.

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.

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.