Koh Nang Yuan

One of the most beautiful islands in the world, Koh Nang Yuan actually consists of three small islands connected by sand bars.

In the past, the largest island of the three used to be called “Haang Tao”, which means ‘turtle’s tail’ for it being that part of the turtle shape seen when viewing Koh Tao (which means ‘turtle island’) from the south. Nowadays, its stunning scenery has made it a popular destination for tourists around the globe.

Koh Nang Yuan Island has some great snorkeling sites and is famous for scuba diving. There are four dive sites dotted around the island: Nang Yuan Pinnacle (also known as Red Rock), Green Rock, Japanese Gardens, and Twin Peaks. All are very popular, with Japanese Gardens also being a great snorkeling spot as well. Don’t forget to visit the mountain viewpoint for a breathtaking view.

A daily boat service from Koh Tao departs from the Lomlahkkhirin Ferry pier in Mae Haad Bay. You can also hire a longtail boat from any beach on Koh Tao. All “around Island” snorkeling and sightseeing boat trips will also visit here.

What’s in this guide?

The island has some great snorkeling sites and it’s popular for scuba diving, especially at Japanese Gardens.

Dive Sites around Koh Nang Yuan Island

Green Rock Dive Site

Depth: Average 12 m / Maximum 30 m
Level of Diving: Beginner to Experienced Divers
A spectacular dive site offering adventurous swim-throughs provided by large archways, caverns, caves and crevices which cut through the submerged, bouldering rocks. Home to the yellow margin triggerfish, divers may encounter a ‘trigger-attack’ during the spawning season, as they become very territorial and protective…

Nang Yuan Pinnacle

Depth: Average 12 m / Maximum 20 m
Level of Diving: Beginner to Experienced Divers
Nicknamed ‘Red Rock’ – a pinnacle that stems from 18 m to just below the surface shelters stingrays, turtles and scorpion fish in the crevices formed through erosion over decades. Taking a heading of 240 degrees toward the coast of Koh Nang Yuan Island, you will found the base of a cave opening. This narrow cavern may be explored…

Twin Peaks

Twin Peaks, Dive Sites at Koh Nang Yuan Island © Big Bubble Diving

Depth: Average 10 m / Maximum 18 m
Level of Diving: Beginner to Experienced Divers

Scattered around the three rock pinnacles, you will find numerous black sea cucumbers, boulder corals and Neptune barrel sponges covered in long white alabaster tubeworms. Between two shallow pinnacles (12 – 14 m), you will find the Clarks anemone fish family protected by a ring of shells…

Japanese Gardens

Koh Nang Yuan Island Dive Site © Liquid Media

Depth: Average 6 m / Maximum 16 m
Level of Diving: Beginner to Experienced Divers

Located on the east side of Koh Nang Yuan, Japanese Gardens is separated by one of the world’s only sandbars connecting three teardrops of land. With fantastic snorkeling and excellent conditions for beginner divers, this dive site offers sandy bottoms to prepare initial divers to adjust their buoyancy…


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Aerial video

Entry rules
No plastic or cans allowed on the island. Visitor fee is 250 Baht per person. Island closes at 17:00.

Nang Yuan Terrace

A beautiful place on Koh Tao that is not to be missed during your stay here as it offers an amazing view of Koh Nang Yuan. Located on the far north west coast, at the end of the road, in Dusit Buncha Resort, this is the closest point between the two islands. Wonderful at any time of the day, even more so at sunset. An entrance fee is charged. This fee can be redeemed for drinks at the resort’s restaurant.


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Nang Yuan Terrace