Twins

One of the most famous dive sites on Koh Tao, this site features something for every experience level. Ranging from 5 to 19 meters, Twins is located just off the western side of picturesque Koh Nanguan and is a favorite of students and leisure divers alike.

You will find many blue-spotted rays, all the classic tropical fish, crocodile needlefish, and even the occasional seahorse. Hawksbill and green sea turtles are seen semi-regularly, and Siberian gobies cover the sandy areas.

Level

Level

Beginner

Visibility

Visibility

11 m

Current

Current

Light Current
No Current
Strong Current
Ripping Current

DIVE TYPES

DIVE TYPES

Night Dive
Wall/Drop Off

Temperature & Visibility

Dives

Wildlife Diversity

Affiliated Training Center

Recommended Training

Open Water Diver

Begin your lifelong adventure as a certified diver with the globally recognized SSI Open Water Diver certification.

Boat Diving

Discover pristine dive sites that cannot be reached from shore and experience the excitement of liveaboard diving. Learn all you need to dive from boats with the SSI Boat Diving Specialty. Start today!

Stress & Rescue

Learn to identify stress, prevent accidents, and learn rescue diver skills with this essential Diver Stress and Rescue Specialty program. Help yourself and other divers to stay safe. Get started now!

Enriched Air Nitrox Level 2 (40%)

Extend your dive time, shorten your surface intervals and spend more time exploring the dive sites you love, with the SSI Enriched Air Nitrox Specialty certification program.

Night Diving and Limited Visibility

Diving does not end when the sun goes down! Become a night diver and meet the incredible marine life that only comes out at night. Join the SSI Night Diving and Limited Visibility specialty program.

Navigation

Become a better, more confident diver who always knows where they are going. Learn how to use a dive compass, natural navigation techniques and more. Join the SSI Navigation specialty today!

Search & Recovery

Make lost items a thing of the past with the SSI Search & Recovery specialty program. You will learn all you need to plan and conduct search and recovery dives, so you can find lost items with ease.

Deep Diving

Many exciting and iconic dive sites lie in deeper waters. The SSI Deep Diving Specialty will get you there - safely and with confidence. Learn how to plan and conduct dives to between 18 and 40 meters deep with SSI.

Perfect Buoyancy

The SSI Perfect Buoyancy Specialty is the best way to improve your body position for relaxed dives, lower your air consumption and increase your bottom times. Take control of your enjoyment. Start online now!

Photo & Video

Learn how to take underwater photos that capture your dive highlights and incredible marine life encounters with the SSI Photo & Video Specialty program. Get started online today.

Shark Ecology

Sharks are vital for healthy oceans and are truly spectacular to dive with! Join the SSI Shark Ecology program and learn how to dive safely with sharks, why their behaviors are misunderstood and more. Start online today!

Marine Ecology

The SSI Marine Ecology Specialty program is the best way to discover the exciting science of marine ecology and become an underwater naturalist. Enhance your dives in a new way. Earn the SSI Marine Ecology specialty certification now!

Sea Turtle Ecology

You will learn to identify sea turtles species, discover their history and role in marine ecosystems, and threats to their survival. Upon completion, you will earn the SSI Sea Turtle Ecology Specialty certification.

Fish Identification

Learn how to identify fish with the SSI Fish Identification specialty program and enhance your dives! Discover all you need to identify common families of Caribbean, Indo-Pacific and Red Sea reef fish and earn your SSI Fish Identification specialty certification.

Extended Range Foundations

The SSI Extended Range Foundations program is one of the most popular advanced diving specialties under the SSI Extended Range umbrella. It provides you with a workshop environment to improve your diving skills to a high level.

Extended Range Nitrox Diving

Do you enjoy nitrox diving? The SSI Extended Range Nitrox program will certify you to dive to a depth of 40 meters with limited decompression while diving with nitrox. Start online today!

Extended Range (Twin Set)

Are you looking to become a tech diver? To dive deeper, farther, or longer than you ever have done before? Begin your journey and extend your range with the SSI Extended Range Trimix diver certification program.

Basic Freediving

Discover the freedom and tranquility that keep freedivers returning to the water. Learn how to go freediving with this essential freediver training and earn your SSI Basic Freediving certification! Your adventures as a freediver begin here!

Freediving Level I

Join the SSI Freediving Level 1 course and learn how to freedive with a buddy in open water environments to a depth of 20 meters. Your global freediving adventures begin here!

Dive sites nearby

© Member Diving, Koh Samui, 84320 Koh Samui

Buoyancy World

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.

No Name Pinnacle

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.

© HOBOYA KOH TAO ほうぼう屋タオ島, 84360 Koh Tao

Japanese Gardens

Japanese Gardens is located on the east side of Koh Nanguan. Its protected and a very calm and easy site. The sandy area off. Its a very calm and easy site. The sandy area off the island gradually gets deeper and deeper, and you can wall dive along the island to the north. The depth ranges from just a couple meters to about 16 meters.

© HOBOYA KOH TAO ほうぼう屋タオ島, 84360 Koh Tao

White Rock

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.

Red Rock

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.

© HOBOYA KOH TAO ほうぼう屋タオ島, 84360 Koh Tao

Green Rock

This “drift“ dive site is located on the north side of Nan Yuan Island, adjacent to Koh Tao. The name “Green Rock“ comes from the fact that the roots near the surface of the water look green. The depth ranges between 10 and 25 meters and 30 to 40 meters depth can be found with a short swim to the West.

© Big Blue Diving, 84360 Koh Tao

Hin Pee Wee

This dive site is located to the south of Nan Yuan Island, adjacent to Koh Tao. It is a landscape of large piles of rocks folded over each other, and the depth of the rocks rises from 30 meters to near the water’s surface.

© Koh Tao Divers, 84360 Koh Tao

HTMS Sattakut, wreck

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.

Mango Bay

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.

Junkyard

This dive site contains a lot of artificial items such as a Jeep, a toilet seat, etc... Which are now all new marine life habitat! Please don’t touch!