a seahorse swimming in the water

See the Bigger Picture with the SSI Marine Ecology Specialty in Koh Tao

SSI Marine Ecology

Curious about how coral reefs, fish, and ocean habitats are all connected? The SSI Marine Ecology Specialty teaches you how marine ecosystems function, how energy moves through the ocean, and why every organism plays a vital role in maintaining balance beneath the surface.

Level

Intermediate

Course

Duration

1

Days

Cost

฿5,000

Thai Baht

The Learning Experience

In the SSI Marine Ecology Specialty program, you will learn how ocean organisms interact with each other and their environments. Go beyond simply identifying marine life and begin to understand the deeper connections that shape coral reefs and tropical ecosystems.

This course explores how energy flows through marine communities, how different habitats support one another, and how environmental pressures impact the underwater world. As you dive around Koh Tao, you will start to see the reef not as separate species, but as a living, interconnected system. By the end of the program, you will have a stronger ecological understanding of what you are seeing on every dive and a greater appreciation for how to protect it.

Ready to start your adventure?

What’s included

What to bring

Prerequisites

Itinerary

12:00-17:00 Marine Ecology academic session
16:30-17:00 Debrief and certification

SSI Marine Ecology

In the SSI Marine Ecology specialty program, you will learn how ocean organisms interact with each other and their environments. You will be taught how energy flows through communities and the links between different ocean ecosystems.

All activities start the day after arrival on the island.

฿5,000

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

Sanjana M.
2 July 2026

Had the BEST time at good time. The instructors here are amazing and hold the highest standards. Special shoutout to Ana my open water instructor and Carmen my advanced open water instructor, I feel way more confident in my diving and skills. Thanks Charlie for being so accommodating, definitely recommend choosing this for a more one on one dive experience!!!

Familie B.
30 June 2026

On June 29th, I did a refresh dive with Lydia as instructor. It had been quite a while since my last dive, and I thoroughly refreshed the basics, both theory and practice. Lydia is amazing! She is a skilled communicator, has a pleasant voice, knows what she is talking about, and takes her time with you. The two dives were relaxed, and she knows how to avoid the crowds underwater. I felt safe and am entering the water again with full confidence. Thank you! And Bente... thank you for your tips! Regards, Joris

Tyler C.
30 June 2026

Goodtime Diving was awesome! We came to Koh Tao to get our Open Water certifications and talked with a bunch of different dive shops, and Good Time was definitely the best one. We enjoyed the course so much that we decided to also get our Advanced Open Water and Nitrox specialty with Goodtime Diving. Shout out to our instructor Shai, who was so passionate, patient, and engaging throughout every course. He explained everything clearly, made sure everyone understood both the theory and practical skills, and was always happy to go over things again whenever we needed. His enthusiasm made every dive fun and helped us feel confident and comfortable in the water. We couldn't have asked for a better instructor and would highly recommend Good Time Diving to anyone looking to learn to dive on Koh Tao!

Yumi R.
30 June 2026

This place is not only a wonderful place to chill with a beer to watch the sunset and have some good food but also obviously for diving and adventure! Shoutout to Ana for excellent scuba instruction- she is patient, cheerful, thorough , and a wonderful soul 🇧🇷. Shoutout to Shai for being careful, attentive, and I learned a lot in my Advanced Open Water course. I like that it was a small group of 3. (Goodtimes can do it with 1 person!! ) . Shoutout to Logan for being a talented photographer and a relatable world traveler- chill vibes. Shoutout to Andrew for being an experienced climber with some cool routes to share. Shoutout to Charly for running a competent and excellent business here on Koh Tao. Shoutout to the bar & kitchen team for being so kind and hardworking.

Kat
30 June 2026

Had such a fun time doing my open water here!! Shai was the best instructor, very thorough and explained everything well. The dives were beautiful, and I couldn’t have imagined getting certified anywhere else! Also shoutout to Charly for being so kind and helpful throughout the whole process :)

Ulysse B.
28 June 2026

Had a great couple dives with Ben, super friendly staff, good equipment, and a beach club on site for a cheeky after-dive pint with the team. Precisely what Koh Tao is about! Cheers