The question every beginner asks and the internet answers badly, usually because someone is being paid for the answer. The short version: choose the centre, not the logo.
No, not really. Every agency below teaches to shared international standards — the same skills, the same depth limits, the same progression — and every one produces a certification that any dive centre in the world will accept. What varies enormously is the individual centre and the individual instructor, and that variation is far larger than anything between the agencies. Choose the centre.
The largest by a distance, and the one most people have heard of. Materials are polished, the system is heavily standardised, and a PADI card is recognised anywhere without a conversation.
Very common on this coast and functionally equivalent. Training materials are digital and often included rather than sold separately, and centres tend to be tied more closely to the agency.
The older European federation model, strong with clubs and in Germany, France and Italy. Often more theory-heavy. One-star roughly maps to Open Water, two-star to Advanced.
Smaller, all teaching to the same underlying standards, all producing cards accepted here. BSAC in particular carries a serious club-training reputation.
The claim
"PADI is the only one recognised internationally."
The reality
All the agencies above are recognised internationally. They teach to shared standards — the same skills, the same depth limits, the same progression — and a centre anywhere in the world will take any of these cards. A dive centre that tells you otherwise is selling you a course you already have.
The claim
"One agency is safer than another."
The reality
The variation between two instructors within one agency is far larger than the variation between agencies. The person teaching you, the group size and the kit are what determine how good and how safe your course is. Choose the centre, not the logo.
The claim
"I will have to start again if I switch."
The reality
You will not. Certifications cross over: an SSI Open Water diver can do a PADI Advanced, and vice versa, without repeating anything. Bring your card and your logbook and it is a non-event.
The claim
"The cheapest course is the same course."
The reality
On paper, yes — the standards are identical. In practice the difference between centres is group size, how many days they actually spend, the state of the kit and whether the instructor has time for you. That is precisely what the price difference buys, and it is worth paying.
Training standards, medical requirements and marine park rules change, and every dive centre interprets them slightly differently. Treat this as what to ask about rather than as the rules themselves — your instructor and the centre’s current paperwork are the authority, and anything medical is a doctor’s call, not ours.