Level
Advanced
Course
Duration
1.5
Days
Max Depth
40
Meters
Cost
฿8,000
Thai Baht
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.
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
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.




I was at Goodtime for the last week of march 2026, as I know Lukas already from my time on Koh Phangan. First day he was busy, so I was diving with Edu, who was a nice guy guided me nice and slow as I like it. The next day´s I was diving with Lukas and it was as expected. He´s a really good instructor and guide, I really can reccomend him, his professionalism is absolutly great. We had some very nice cavern and wreck dives.
A fantastic dive center with excellent organization. Our group of five did the Basic Dive and were accompanied by two very friendly and competent instructors, Lydia and Ana.
An absolutely fantastic experience with Goodtime Adventures Scuba Diving. A super friendly team, professional service, and a relaxed atmosphere. You feel safe and well looked after at all times. I can highly recommend them. Ask for Lydia or Ana as instructors when you arrive, and with a bit of luck, you might even get Mike, who can accompany you as a photographer with high-end equipment and capture your dive in incredibly beautiful pictures—all in all, 5 stars!
The introduction to the diving course was excellent; my nervousness disappeared immediately. Lydia, as the diving instructor, is very competent. I had a lot of fun. Great job, and I would definitely do another dive at this diving school anytime.
It was a fantastic diving experience. The instructors, Anna and Lydia, were sensational, and I felt safe and well looked after at all times. Everything was explained simply and perfectly. I can absolutely recommend it.
Another incredibly amazing experience! It was my fourth dive. Since it's been a while since my last dive, I was grateful for the excellent instruction here. Highly recommended! A huge thank you to our dive instructor, Lydia – thanks for having us! Hope to see you again soon!