Sophie Johansen
Divemaster and Marine Conservationist from Bergen, Norway
Sophie Johansen
From Bergen, Norway · Southern Thailand
I came to Koh Tao to learn to dive. I stayed to protect the reef. The ocean chose me, not the other way around.
My Story
I arrived on Koh Tao in 2023 for a two-week vacation. I was working as an environmental policy analyst for the Norwegian government in Bergen, spending my days writing reports about ocean conservation that nobody seemed to read. I was burned out, disillusioned, and questioning whether bureaucratic work was the best way to make a difference for the marine ecosystems I cared about.
Koh Tao is one of the world's most popular destinations for learning to dive. Over 50 dive schools operate on this small island in the Gulf of Thailand, certifying more divers per square meter than anywhere else on Earth. I signed up for an Open Water course with Roctopus Dive, expecting a fun holiday activity. By the end of day one, breathing underwater for the first time at Japanese Gardens dive site, I knew my life was about to change.
The underwater world off Koh Tao is extraordinary. The island sits in a marine protected area with coral reefs, rocky pinnacles, and an incredible diversity of marine life. On my third dive, a Hawksbill sea turtle swam directly toward me and passed within arm's reach. I could see every detail of its ancient, patient face. I surfaced crying. Three weeks later, I was a certified Divemaster. Two months later, I had resigned from my government job.
The transition from policy analyst to divemaster was not just a career change - it was an identity transformation. In Bergen, I was Sophie the bureaucrat, competent but invisible. On Koh Tao, I became Sophie the diver, someone who could read the ocean, navigate by natural landmarks, and help terrified students discover the magic I had found. The confidence that gave me was unlike anything I had experienced.
I now work as a full-time divemaster and marine conservation coordinator for a dive school that prioritizes reef protection. My role combines guiding certified divers with leading coral reef monitoring dives, organizing monthly reef cleanups, and running coral restoration projects in partnership with the Koh Tao Marine Branch. We have planted over 2,000 coral fragments in our nursery and documented more than 150 species of fish on our house reef.
The income is modest - 30,000-40,000 THB per month including base salary, dive commissions, and tips. But my living costs on Koh Tao are only 15,000 THB. I share a bungalow with another divemaster for 5,000 THB each. Food at local Thai restaurants costs 40-80 THB per meal. The dive shop provides free diving equipment and tank fills. I have no car payment, no heating bill, no expensive Norwegian winter wardrobe. My savings from my government job provide a financial cushion.
What I did not expect was how the dive community on Koh Tao would become family. Divemasters and instructors from the UK, Germany, France, Australia, Brazil, and Thailand live and work together in a way that feels more like a tribe than a workplace. We dive together on our days off, cook communal dinners, and watch sunsets from Sairee Beach. The transient nature of island life means you make friends quickly and deeply.
The environmental work is what gives my life meaning. In Bergen, I wrote policy papers about ocean acidification and coral bleaching that disappeared into government archives. On Koh Tao, I physically plant coral, remove ghost nets from reefs, and teach divers about marine conservation in direct, tangible ways. The impact is visible and immediate. I can swim to our coral nursery and see new growth from last month's planting. That feedback loop is addictive.
Climate change is the shadow over everything we do. The Gulf of Thailand has experienced significant coral bleaching events, and water temperatures are rising. Some days the reef monitoring data is discouraging. But the conservation community on Koh Tao is resilient and pragmatic. We do what we can with what we have. And we have hope because we see recovery happening in our restored areas.
Norway will always be home. I miss the fjords, the northern lights, and my family. But my Norwegian friends who visit me on Koh Tao always say the same thing: they have never seen me this happy, this alive, this much myself. The ocean gave me a version of myself I did not know existed.
Top Tips
- 1Koh Tao is the cheapest place in the world to get dive certified. A Divemaster course costs about 30,000-50,000 THB including accommodation
- 2The DTV visa or education visa work well for long-term dive professionals. Many schools assist with visa arrangements
- 3Marine conservation volunteer programs on Koh Tao provide free diving in exchange for reef monitoring work
- 4Build your dive certifications progressively: Open Water, Advanced, Rescue, then Divemaster. Do not rush the process
- 5Save money before moving. Dive professional income is seasonal and modest
- 6Learn about coral ecology and marine biology alongside diving skills. It makes you a better professional and conservationist
- 7The monsoon season from October to December reduces diving days. Plan your finances accordingly
Favorite Things
- Dawn dives at Chumphon Pinnacle when the whale sharks visit
- The moment a new diver sees a turtle for the first time and their eyes go wide behind their mask
- Coral nursery monitoring - watching fragments we planted become living reef
- Sairee Beach sunset sessions with the divemaster crew
- Thai boat crew who have been diving these waters for 30 years and know every rock
- Night dives with bioluminescent plankton that turn the ocean into a galaxy
- Mango sticky rice after a three-dive day
- The feeling of weightlessness and total silence underwater
Cultural Insights
- 1Koh Tao was originally a prison island before becoming a fishing community and then a dive destination. The transformation is remarkable
- 2Thai boat captains are the unsung heroes of the dive industry. Their navigation skills and ocean knowledge are extraordinary
- 3The sea gypsy communities of the Gulf of Thailand have been diving without equipment for millennia
- 4Marine conservation on Koh Tao is a genuine collaboration between foreign divers and Thai authorities
- 5The island's economy depends almost entirely on diving. Environmental protection is not idealism here - it is economic survival
Challenges & Realities
- Dive professional income is modest and seasonal
- Climate change and coral bleaching threaten the very reason the island exists
- Island life can feel isolated, especially during low season
- Physical demands of daily diving take a toll on the body over time