Koh Tao Dive Operators: What We Could Verify (2026)
Not a ranking and not a recommendation. Every dive and snorkel operator on Koh Tao that appears in the Green Fins register, showing for each one what an independent source confirms, what the operator asserts about itself, and what we could not find in any register we know of. No operator paid to be listed.
How to read the labels.
checked in a register a register or authority states it, and we opened it on the date shown.
operator says so the operator states it, and the via line says where we read it:
their own site, their agency profile, or a reply to our email. Evidence of what they claim, not
that it is true. not verified we could not check it, and we say so rather than leave the
field out.
What this list actually shows
- 28 operators in the register on 2026-08-12.
- 23 hold Certified membership, meaning an in-person assessment within the last 12 months.
- 5 hold Digital membership, a self-evaluation with no minimum standard to pass.
- 0 publish which languages their instructors teach in. It is the field readers ask for most and the one almost nobody fills in.
- 0 could be checked for insurance. No public register carries it.
Search
Filters narrow the list below. With JavaScript off, every operator is still listed in full.
Showing all 28 operators.
Why some fields read "not published" on every card below. These
reasons are the same for every operator here, so they are stated once rather than repeated
28 times:
- Instructor languages. No agency profile we could reach, and no register publishes instructor languages. A website language switcher is a fact about the website, not about the staff.
- Instructor languages. The shop has not filled in the languages field of its PADI profile, and no register publishes which languages instructors teach in. A website language switcher is a fact about the website, not about the staff. Asked by email.
- Insurance. No public register of operator insurance exists for Thailand.
- Licence. No tourism business licence number published on the operator's own site, and the Thailand register cannot be queried by operator name from here.
- Staff on the roster. No staff breakdown published for this operation.
- Training agency. Not stated in a form we could read. Several of these sites render their content with JavaScript we do not execute, so this is absence of a reading, not absence of an affiliation.
Assava Dive Resort
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID JKU63. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Ban’s Diving Resort
- Green Fins
- Certified Gold Member, assessed in-person, within the last 12 months. Code of Conduct score 50 or less out of 330, where lower is better. Register ID PJM61. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Big Blue
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID CVC66. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names SSI, TDI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Bigbubble Dive Resort
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID DKM47. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Black Turtle Dive
- Green Fins
- Certified Gold Member, assessed in-person, within the last 12 months. Code of Conduct score 50 or less out of 330, where lower is better. Register ID HUD16. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- PADI, store 26203. operator says so
- Licence
- TAT licence 41/00575, a number that can be taken to the authority. operator says so
- Insurance
- Not published. not verified
Buddha View Dive Centre
- Green Fins
- Certified Gold Member, assessed in-person, within the last 12 months. Code of Conduct score 50 or less out of 330, where lower is better. Register ID RGL90. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Calypso
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID QPN84. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Crystal Dive
- Green Fins
- Digital Member. Self-evaluated, with no minimum standard to pass. Register ID AZO48. checked in a register
- Register conflict
- The register returns this operation with membership type 'digital' and the terms 'Digital Member', while its level field reads 'Certified Silver Member'. The two disagree, so we report the conservative reading and flag the conflict. Green Fins is the authority on which is correct.
- Instructor languages
- Not published. not verified
- Training agency
- Names SSI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- TAT licence 44/00200, a number that can be taken to the authority. operator says so
- Insurance
- Not published. not verified
DJL Diving
- Green Fins
- Certified Bronze Member, assessed in-person, within the last 12 months. Code of Conduct score 200 or less out of 330, where lower is better. Register ID PZM61. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Echo Divers
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID BGM11. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Eco Koh Tao
- Green Fins
- Certified Gold Member, assessed in-person, within the last 12 months. Code of Conduct score 50 or less out of 330, where lower is better. Register ID UPD14. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Fifty Six Dive
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID IAK14. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
French Kiss Divers Koh Tao
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID WRQ21. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names CMAS on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Global Reef
- Green Fins
- Digital Member. Self-evaluated, with no minimum standard to pass. Register ID RHX28. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Goodtime Adventures
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID LJW71. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI, SSI, BSAC on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Koh Tao divers
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID OCJ86. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names SSI, TDI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Koh Tao Scuba Club
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID NJG39. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Koh Tao Taco Divers
- Green Fins
- Digital Member. Self-evaluated, with no minimum standard to pass. Register ID BHT36. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names SSI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Master Divers
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID VMW78. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
NAVA SCUBA DIVING
- Green Fins
- Digital Member. Self-evaluated, with no minimum standard to pass. Register ID PKN05. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
New Heaven Dive School
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID CCV57. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Ocean Blue Koh Tao
- Green Fins
- Certified Bronze Member, assessed in-person, within the last 12 months. Code of Conduct score 200 or less out of 330, where lower is better. Register ID GOH48. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Oxygen Koh Tao Company Ltd.,
- Green Fins
- Digital Member. Self-evaluated, with no minimum standard to pass. Register ID IDA66. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Phoenix Divers
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID CBL06. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
PURA VIDA KOH TAO
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID BTB19. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
Roctopus EcoTrust
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID INT91. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Not published. not verified
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
The Coral Tribe
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID VEO68. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names SSI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
The dearly dive
- Green Fins
- Certified Silver Member, assessed in-person, within the last 12 months. Code of Conduct score 150 or less out of 330, where lower is better. Register ID WAE97. checked in a register
- Instructor languages
- Not published. not verified
- Training agency
- Names PADI on its own homepage, which is a claim and not a membership we could look up. operator says so
- Licence
- Not published. not verified
- Insurance
- Not published. not verified
What this directory refuses to tell you
Insurance. No public register of operator liability cover exists for Thailand, so any directory claiming to have checked it is quoting the operator back to you. Guide ratios and in-water practice. The Green Fins assessment covers environmental impact, not supervision. Instructor languages, where they are blank. A blank means no answer yet, not that nobody there speaks your language. It is the most commonly invented field in this industry, and a website language switcher is not evidence for it: that tells you a translator was hired once, not who is on the boat this season.
The list can only contain operators who joined Green Fins. A shop that never applied is absent, and absence here says nothing about it. Every dive or snorkel operator on Koh Tao carried in the Green Fins member register on 12 August 2026. Operators outside that register are not listed, which is a limit of the source and not a judgement about them.
Corrections and removals. If you operate one of these businesses and a
field is wrong, write to us with the document and we will correct it and date the correction. We
will not remove a factual register entry on request, and we do not accept payment for a listing,
an ordering or a badge. If that ever changes it will be declared here and on the
disclosure page before the first paid listing appears.
What this page is, and is not. This is independent research, written by the operator of this site and not reviewed by a lawyer. It is not a substitute for training, and listing an operator is not a safety endorsement: we have not dived with these businesses, inspected their equipment or watched their briefings. Diving carries risk that no register removes. Where this page mentions cover it is not insurance advice: we state only that no public register exists, which is a fact about registers, not about any operator’s policy. Every field carries the date it was checked; verify anything that matters with the operator and the authority before you rely on it.
Sources
- Green Fins member register (Reef-World Foundation with the UN Environment Programme). Queried through its store locator at 10.0956/99.8404, radius 25 km, filtered to Koh Tao. greenfins.net, checked 2026-08-12.
- Green Fins membership definitions. A Certified Member "received an in-person assessment from a Green Fins assessor within the last 12 months" and is scored out of 330 where lower is better: Gold to 50, Silver to 150, Bronze to 200. A Digital Member self-evaluates, and "Digital Members do not have to pass a minimum requirement", on a separate scale to 10 running the other way, so the two scores cannot be compared. Certified, Digital, checked 2026-08-12.
- PADI dive shop profiles at apps.padi.com for instructor languages and staff counts, read where the operation publishes a store number we could find and has filled those fields in. Most have done neither, which is why that column is thin rather than absent.
- Operator websites, read on 2026-08-12 for the self-declared fields only. Of the 28 addresses the register carries, 1 are dead, 0 are social media pages that refuse automated checks, and 0 refused us for other reasons. Each is marked on its own card rather than quietly dropped or called dead.
- Our own Koh Tao guide for the place itself, and how to get certified while travelling for choosing a course.