Japanese Gardens: Koh Nang Yuan's Beginner Dive and Snorkel Site

Japanese Gardens is Koh Tao's classic beginner site: a shallow, calm bay on the east side of Koh Nang Yuan, looking back towards Koh Tao. Coral bommies stand on pale sand like plants in a garden, which is where the name comes from. If you are searching for the Japanese Gardens dive site on Koh Tao, you are looking at the easiest and friendliest option around the island.

The reef begins almost at the surface and slopes gently to roughly 10 to 12 m, with the water usually flat and the current light. That makes it a favourite for first-time try dives, Open Water courses, refreshers and photographers, and you can also snorkel it straight from the beach on Nang Yuan.

Japanese Gardens dive site map

1. 1Koh Nang Yuan, east side
2. 2Nang Yuan beach and snorkel entry
3. 3Coral bommies and table corals, 2 to 10 m
4. 4Funnel and mushroom corals, 4 to 12 m
5. 5Sandy bottom, about 12 m
6. 6Coastline reef toward Red Rock

Diving Japanese Gardens: the route

Boats usually drop you in the shallow end near the beach, or you can enter from the sand. From there it is a slow drift through the bommies at about 5 to 10 m, passing from the middle of the bay towards the eastern side where funnel and mushroom corals cover a large area. There is no rush: the point of this dive is to look closely.

Finish in the shallows for a long safety stop. Many divers also arrive here at the end of a Red Rock dive, following the coastline reef south, so it works as both a standalone site and a gentle ending.

Because the bay is so shallow and calm, it suits students building confidence, refresher dives and photographers who want time with a subject. On a course, expect to practise your skills before heading out to explore.

Underwater layout

• Shoreline and beach: 0 to 3 m, where snorkellers and the shallow end begin.
• Coral bommies and table corals: the central part of the bay, from about 2 to 10 m.
• Funnel and mushroom coral area: towards the east side of the bay, around 4 to 12 m.
• Sandy bottom: the seabed between the coral patches, sloping to about 12 m.
• Coastline reef: links north towards Red Rock at roughly 8 to 15 m.

Most of the site slopes to about 10 to 12 m, and a few areas go slightly deeper, to around 14 or 15 m.

The bay is protected by the headlands of Koh Nang Yuan, with the island lying to the west and open water towards Koh Tao on the east. The layout is easy to follow, which is a big part of why instructors like it for first dives.

Marine life at Japanese Gardens

The reef is busy with the colourful, easy-to-spot residents: anemonefish, sergeant majors, damselfish, fusiliers, rabbitfish, parrotfish, butterflyfish, bannerfish and red-breasted wrasse. Harlequin sweetlips drift between the bommies, and blue-spotted rays rest on the sand around the table corals.

You will find brain, table, staghorn, lobe and lettuce corals, plus barrel sponges, anemones and giant clams. Christmas tree worms and pufferfish are easy macro subjects. Green turtles, juvenile batfish and banded sea snakes show up from time to time, and pink-tailed triggerfish have been spotted here too.

The calm water and good light make this a rewarding place for slow macro work. Look closely at the anemones, the table corals and the base of the bommies, where small shrimp and juvenile reef fish shelter. A conservation team monitors coral recruitment here to cope with the pressure from visitors.

Conditions and best time to dive

The bay is sheltered by Nang Yuan's headlands, so there is little wave action and little to no current for most of the year. Visibility averages about 10 m and can range from 2 m on a bad day to 20 m or more on a good one. It is a good choice almost any month, particularly when other sites are rougher.

The site is also reachable by snorkel tours and from the beach at Nang Yuan, so it is popular with visitors who are not diving at all.

Tips from local divers

• Keep your buoyancy neutral over the bommies. A conservation team monitors coral recruitment here, because the bay takes a lot of visitors.
• Slow down for macro and natural-light photography.
• Check around the table corals for rays and shrimp.
• Never stand on or touch the coral, especially in the shallows.

Safety notes

This is one of the easiest dives on the island, but the usual rules apply: watch your depth, stay with your buddy and keep clear of the coral. Banded sea snakes live here and are not aggressive, so just give them space. In the shallow end, mind your fins and your surface positioning around other divers and snorkellers.

Why dive Japanese Gardens

• Shallow garden of hard-coral bommies
• Koh Tao's best first-dive spot
• Snorkel straight from the beach
• Anemonefish, sweetlips and blue-spotted rays
• Funnel and mushroom corals on the east side
• Pink-tailed triggerfish reported

Japanese Gardens: frequently asked questions

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