Scuba training agencies in Australia
Agencies establish standards, materials and certification pathways. They are not interchangeable with an Australian government occupational-diving licence, and the logo on the door tells you less than most divers assume.
Agency locators naturally concentrate on their own networks. A PADI search will emphasise PADI centres; an SSI directory will emphasise SSI Training Centers; SDI and TDI cover another section of the market; RAID and IANTD become particularly relevant when advanced technical training is included.
The CDAA sits apart from all of them. It is not a general training agency but the body governing cave and sinkhole diving access in Australia, and for anyone intending to dive Mount Gambier it matters more than any of the others.
The practical point is that two centres carrying the same logo can offer completely different services. The agency guarantees the standards a course follows. The instructor and the facility determine everything else.

Cross-agency equivalence is the source of a great deal of confusion. These are the same qualification under different labels.
| Open Water Diver | PADI: Open Water Diver · SSI: Open Water Diver · SDI: Open Water Scuba Diver · RAID: Open Water 20 |
|---|---|
| Advanced Open Water Diver | PADI: Advanced Open Water Diver · SSI: Advanced Adventurer · SDI: Advanced Adventure Diver · RAID: Explorer 30 |
| Rescue Diver | PADI: Rescue Diver · SSI: Diver Stress & Rescue · SDI: Rescue Diver · RAID: Rescue 35 |
| Enriched Air Nitrox | PADI: Enriched Air Diver · SSI: Enriched Air Nitrox · SDI: Computer Nitrox Diver · TDI: Nitrox Diver · RAID: Nitrox |
| Deep Diver | PADI: Deep Diver · SSI: Deep Diving · SDI: Deep Diver · RAID: Deep 40 |
| Wreck Diver | PADI: Wreck Diver · SSI: Wreck Diving · SDI: Wreck Diver · TDI: Advanced Wreck |
| Drysuit Diver | PADI: Dry Suit Diver · SSI: Dry Suit Diving · SDI: Dry Suit Diver · RAID: Dry Suit |
| Night Diver | PADI: Night Diver · SSI: Night & Limited Visibility · SDI: Night & Limited Visibility Diver |