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

chamy
25 June 2026

I did two dives with Ben, and she was very kind, energetic, and professional. I had a great time and made some wonderful memories. Highly recommended! :)

Katherine B.
24 June 2026

I went scuba diving for the first time and it was truly incredible! I was so nervous, but Lydia(the best instructor ever) helped me through the entire dive and it was one of the best experiences I’ve ever had! Could not recommend more!!

Rémy D.
22 June 2026

We did the open water training. We enjoyed a lot the place to start (nice restaurant and bar by the beach with amazing sunset) and all the staff was great. Most importantly Ana (our teacher) was very thoughtful, knowledgeable, we felt super safe diving and we had a lot of fun 😁 I absolutely recommend to go there 👌🏼

Conor E.
17 June 2026

Such a lovely group of people. Professional, knowledgeable and friendly. Would highly recommended for anyone wanting to dive in Koh Tao. Thank you Liv, Lydia, Julia, Shai and Char

Paul S.
13 June 2026

This is a special place, with amazing people 🙌 Having done basic dive training on the island at the start of the month with Goodtime, we decided to return so I could complete my open water certification. Fabio is an incredible instructor and an incredible human with it 👏. He made the course really enjoyable and straightforward. We were also very lucky to see some amazing marine life 👌. Whether you're on the boat or at the bar, the atmosphere at Goodtime is always relaxed and positive. That is partly due to the stunning location but is heavily influenced by the Goodtime team. Fabio, Anna, Beth, Mike, Chris, Shy and everyone else at Goodtime will make you feel welcome and at ease. Awesome people and incredible experiences, deliver so much more than just a Goodtime 🫡

Paulina S.
12 June 2026

I had a great experience with this school! I did the 2.5 day Open Water course and when I lost my nerves due to panic, everyone was so nice and empathetic towards me. I really felt like it was their priority for me to feel comfortable and have a positive first diving experience. Thank you Shai, Carmen and Charlie, for your support and patience, and for creating a solution that made me come back for the third day, finish the course, get the license despite everything and most importantly, have a good time! 🩵🐠🤙🏽