We dive east & west — more variety for you
Your ocean classroom around Koh Tao: coral gardens, granite pinnacles, artificial reefs, and wrecks.
From the Hydronauts Diving Resort base in the south, we reach Koh Tao’s dive sites east and west every day — giving you more variety and the best site for today’s conditions, your level, and what you want to see.
Expect warm water, easy boat entries, and the chance to see a whale shark with a bit of luck.
Koh Tao Dive Sites
Use this map to see where each dive site is located around Koh Tao.
Like this, you can get a sense of travel times and plan your dives before reading the full descriptions below.
Explore the Map: Use the menu in the top left to view all locations. Click on any site to see more details. To open the map in a larger view, use the top right corner.
Chumphon Pinnacle
About an hour north of Chalok Bay, Chumphon Pinnacle is where you really see Koh Tao come alive.
Southwest Pinnacle
About 50 minutes southwest of Chalok Bay, Southwest Pinnacle is another of Koh Tao’s big-fish sites.
Sail Rock
About 90 minutes from Chalok Bay, Sail Rock is the Gulf of Thailand’s most famous dive.
Green Rock
Around 30 minutes north of Chalok Bay, Green Rock is a playground of swim-throughs, arches, and caves.
Red Rock
Just 30 minutes north of Chalok Bay, Red Rock is a colourful pinnacle that leads you to the entry point to the famous Nang Yuan Cave swim-through.
Hin Pee Wee
About 25 minutes north of Chalok Bay, Hin Pee Wee consists of three pinnacles near White Rock and the HTMS Sattakut.
No Name Pinnacle
Right next to the HTMS Suphairin (313), No Name Pinnacle is a rocky outcrop covered in sea fans, whip corals, and sponges.
Twins
About 30 minutes north of Chalok Bay, Twins is one of Koh Tao’s most popular sites for beginner and fun divers.
Japanese Gardens
At Koh Nang Yuan, Japanese Gardens is a shallow bay with some of the largest coral formations on Koh Tao.
White Rock
One of Koh Tao’s biggest and most varied dive sites, White Rock is made up of two large granite pinnacles with coral gardens and sandy patches in between.
Mango Bay
On the northern tip of the island, Mango Bay is a broad sandy bay lined with corals.
Aow Leuk
A short ride east of Chalok Bay, Aow Leuk is a long sandy bay lined with wide coral gardens.
Tanote Bay
Just 20 minutes east of Chalok Bay, Tanote Bay is one of the most exciting shallow dive sites on Koh Tao, with a mix of coral gardens, granite boulders, a sunken catamaran wreck and artificial reef blocks.
Laem Thian
On the east coast, Laem Thian is one of Koh Tao’s most adventurous spots, known for its tunnels, arches, and swim-throughs.
Shark Island
South of Koh Tao, Shark Island gets its name from its shape — the rocky outcrop above the water looks like a shark fin.
Pottery
Just 10 minutes from Chalok Bay, Pottery is a shallow reef known for easy diving and night dives.
Chalok Bay
Right outside the Hydronauts dive center, Chalok Bay is a shallow and calm dive site, perfect for a relaxed afternoon.
Hin Ngam
On the southern wall of Aow Leuk, Hin Ngam is a calm site with rocky slopes and colourful coral gardens.
Hin Wong Bay
On Koh Tao’s northeast coast, Hin Wong Bay is a large, sheltered site with some of the island’s best coral coverage.
Hin Wong Pinnacle
Just offshore from Hin Wong Bay, Hin Wong Pinnacle is a deeper, more adventurous dive.
HTMS Sattakut (742)
Sunk in 2011, the HTMS Sattakut is a 48m World War II–era vessel resting upright just 25 minutes from Chalok Bay.
Mao Bay
On Koh Tao’s northeast coast, Mao Bay is a quiet site with calm conditions and some of the island’s most colourful soft coral fields.
HTMS Hanhak Sattru (312)
Sunk in September 2023 near Mao Bay, the HTMS Hanhak Sattru (312) is one of Koh Tao’s newest wrecks.
Buddha Point
Just south of Chalok Bay, Buddha Point is a shallow reef perfect for an easy dive in calm conditions.
King Kong
About 20 minutes east of Chalok Bay, King Kong is a cluster of small pinnacles rising from a sandy bottom.
HTMS Suphairin (313)
Sunk in 2023, the HTMS Suphairin (313) is one Koh Tao’s newest wreck, resting upright just 30 minutes from Chalok Bay.
Lighthouse
Just off the northeast coast, this site sits below Koh Tao’s old lighthouse.
Tao Tong
Close to Chalok Bay, Tao Tong is a small, shallow site perfect for slow, easy dives.