Blue Marlin Tech
At Blue Marlin Dive Tech, we specialize in taking divers beyond the limits of recreational diving and into the challenging world of technical exploration. Based on the pristine Gili Trawangan, the heart of Indonesia’s diving paradise, our tech division is known for its top-tier training and commitment to the most advanced diving techniques. The Gilis are the perfect backdrop for technical diving, offering an array of deep walls, wrecks, and untouched underwater landscapes that are ideal for both training and exploration. Our courses cover the full spectrum of Technical Diving International (TDI) certifications, from Advanced Nitrox to CCR (Closed Circuit Rebreather) diving, which has become a major focus for Blue Marlin Dive Tech. CCR technology is revolutionizing the way we dive, allowing for longer, deeper, and more efficient dives. Here in the Gilis, with their diverse and accessible dive sites, our CCR training programs thrive. Whether you’re conducting deep decompression dives or fine-tuning your buoyancy on a rebreather, the Gilis offer an unmatched variety of environments for practice and certification. Our proximity to exceptional dive sites makes it easy for our students to transition from classroom training to real-world application, often diving in conditions that closely mimic the most challenging technical environments. The combination of Blue Marlin Dive Tech’s expertise and the world-class dive locations in the Gilis means that students not only receive world-class instruction but also have access to ideal sites to perfect their skills.
- x1 JJ CCR
- x1 DPV

Chris, a Marine Biologist from the UK, manages Blue Marlin Dive Tech with a passion for technical diving that blends curiosity, adventure, and leadership.…

MC, a multitalented instructor from China, works as a dive instructor with Blue Marlin Dive since 2021.…

Simon, the founder of Blue Marlin Dive, is a highly accomplished diving instructor with over 32 years of experience in the industry.…

Will developed a passion for diving when he learned to dive in Cornwall, UK. He was quickly captivated by the abundance of shipwrecks along the south coast and…
Goodman has taught technical diving from the Gili Islands for twenty years and is unusually specialised: the JJ-CCR runs through almost every review, from a…
Summarised from public reviews — how we do this- Intro to TechIDR 5,500,000total
- SidemountIDR 6,500,000total
- Technical DPV CourseIDR 8,000,000total
- Advanced NitroxIDR 9,000,000total
- Decompression ProceduresIDR 9,500,000total
- Extended RangeIDR 15,000,000total
- Advanced Nitrox & Decompression ProceduresIDR 15,000,000total
- Advanced TrimixIDR 17,000,000total
- TrimixIDR 17,000,000total
- Sidemount, Advanced Nitrox & Decompression ProceduresIDR 19,200,000total
Guided diving(1)
Dives with a guide, and taster experiences — no certification at the end.
- Intro to RebreatherIDR 2,500,000total
Consumables are usually extra. Sorb, helium, oxygen and other gas fills, cenote or marine-park entry fees, certification and registration fees, e-learning materials, and equipment or rebreather rental are commonly charged on top of a course price and are not always reflected above. Where a centre states what it excludes, that is noted on the item.
Course names are the centre's own — see their price list. Indicative only; confirm with the centre before booking.
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