scuba divers swimming under water

Explore further with the SSI Deep Diving Specialty

SSI Deep Diving Specialty

Unlock the mysteries of the deep! This course equips certified divers to explore depths up to 40 meters safely, revealing new dive sites and unique marine encounters in Koh Tao’s best dive sites like Chumphon and Sail Rock!

Level

Advanced

Course

Duration

1.5

Days

Max Depth

40

Meters

Cost

฿8,000

Thai Baht

The Learning Experience

Perfect for certified divers wanting to enhance their underwater experiences, the SSI Deep Diving Specialty Course offers a comprehensive exploration of deeper diving. This program includes theoretical lessons combined with three supervised deep dives, where you’ll learn critical safety protocols, dive planning, and techniques necessary for deeper exploration. Upon completion, you’ll be certified to dive down to 40 meters, opening the door to exhilarating deep-water sites and encounters with unique marine life rarely seen at shallower depths.

Ready to start your adventure?

What’s included

What to bring

Prerequisites

Itinerary

09:00-11:00 Deep diving academic session
11:00-11:30 Air consumption check and dive planning
11:30-12:30 Break
12:30-17:00 Deep dives 1+2 (max. 30m)
17:00-17:30 Debrief

08:00-12:00 Deep dive 3 (max. 40m)
12:00-12:30 Certification and celebration :)

SSI Deep Diving Specialty

Unlock the mysteries of the deep! This course equips certified divers to explore depths up to 40 meters safely, revealing new dive sites and unique marine encounters in Koh Tao’s captivating waters.

All activities start the day after arrival on the island.

฿8,000

Why choose Goodtime for Scuba Diving in Koh Tao?

Smaller Groups

Max 4 students per instructor for a more personalised experience.

Later Starts

Enjoy the freedom to sleep in; we start later than most dive schools on the island.

Uncrowded dive sites

We carefully plan our dive trips to avoid the crowds.

Fully Equipped Classroom

Our beach front classroom equipped with Air-Con and WiFi is the perfect environment to learn to dive on Koh Tao.

Highly experienced instructors

Our professional SSI instructors are passionate divers with extensive local knowledge.

Speed boat

We have our very own speedboat that allows us to travel to further dive sites in the quickest time possible.

Reviews

B O.
18 April 2026

Did a Try Dive with my tour group, White Rock is world class! Loved it so much came back for my Advanced Open Water course 2 days later, had an absolute blast. Very professional and fun scuba school, and gorgeous dive sites on this Island! Lydia and Chris were so great, and Liv and Anna were very friendly too. Thanks for giving me my new obsession!

Jomar G.
17 April 2026

Had an amazing dive with the fellas at Goodtime. Ryan, Martin and Mira did a wonderful job, 1000+ recommended. Plus: a couple of days before the dive I rented some climbing gear from them, if ever in Ko Tao def try that, amazing routes and sights.

Imane A.
13 April 2026

A huge thank you to Ana🩵, she's so sweet ☺️ The right person in the right place. I enjoyed my trial dives with her; she knew how to reassure me and show me how to enjoy diving without any worries or fears ✨ And she even has a super cute little fish toy attached to her wetsuit 🤩 Thank you, Ana 🩵 AL

alex M.
12 April 2026

If you want to get your diving license, come to Goodtime Adventures! The entire team Lisa, Gilly, Lukas, Mike, and especially Ana are incredibly professional and welcoming. They make you feel safe and confident during every dive, while also creating an unforgettable experience. A special thanks to Ana an amazing instructor who truly goes above and beyond! And if you want great photos from your dives, I highly recommend asking Mike. The pictures he took are absolutely fantastic. Cheers!

Neve
12 April 2026

Fantastic experience as a first time diver! Ana made us feel so comfortable and we did such a brilliant dive near Nang Yuan. Would highly highly recommend!

Charlotte O.
12 April 2026

What incredible experience! Anna was a fantastic scuba instructor. She had such a knowledgeable and calming presence, we felt so safe. I can’t recommend this company enough! (And mostly Anna)