Learn to Scuba Dive on Koh Tao
“The sea, once it casts its spell, holds one in its net of wonder forever” -Jacques Cousteau
Open Water 20
Learn to dive on Koh Tao! This is the scuba diving course that will make you an internationally certified scuba diver! No previous experience is required.
A Try Dive is a great way to experience scuba diving on Koh Tao if you’re short on time or would like to get a feel for before signing up for the Open Water 20 course.
Twice daily excursions to scuba dive Koh Tao's beautiful dive sites. Whether you’re an experienced or newly certified scuba diver, our skilled dive leaders will guide you on an excursion through the world’s most varied ecosystem.
Why Choose Hydronauts?
Explorer 30 - Advanced
This is the next course after becoming a certified Open Water 20 scuba diver. Get extra training in buoyancy, navigation, deep (30 meters), and 2 elective dives.
Unlock some of the best dive sites and shipwrecks in the world by extending your depth certification to 40 meters.
Nitrox - Enriched Air
Do you want to extend your time allowed at a certain depth? Breathing Enriched Air Nitrox allows you to stay at depth for longer.
Ready to become a Hydronaut?
What our customers are saying on Google
“My favourite thing to do on this planet is to scuba dive” – Buzz Aldrin (Astronaut)
Read The Hydronauts Manifesto
Everyone dreams of a life of adventure and discovery. Many look to the stars in awe but at Hydronauts we recognise the wealth of undiscovered territory right here on planet earth.
Humanity knows less about the vast and varied ecosystem in our oceans than we do about outer space. And while we spend our nights staring up at the stars, at Hydronauts, we’ve chosen to fulfill our dreams a bit closer to home than your average stargazing traveler.
We’ve chosen to DEFY GRAVITY underwater.
Our mission is simple. Good people, good courses, good fun. All this while maintaining an unwavering dedication to quality so that every dive is over the moon throughout your time in our care.
With a small team of handpicked professionals, top-notch equipment, premium facilities and little extras in all the right places, we seek to design a diving experience unique to Hydronauts.
We focus on safety, conveying expert knowledge and tailoring each experience to ensure our divers and guests leave us wanting more.
Come DEFY GRAVITY with us.