| IAC |
International Aquanautic Club |
https://www.diveiac.com/en/ |
| ISDA |
International Scuba Diving Academy, Italy |
http://www.isdaitalia.it |
| NADD |
NADD GLOBAL DIVING AGENCY (NADD) |
http://www.naddeurope.com |
| PADI |
Professional Association of Diving Instructors |
http://www.padi.com |
| RAID |
Rebreather Association of International Divers
|
https://www.diveraid.com/ |
| SDI |
Scuba Diving International |
https://www.tdisdi.com |
| SNSI |
Scuba Nitrox Safety International, Italy |
http://www.snsi.it |
| SSI |
Scuba Schools International (Worldwide) |
http://www.divessi.com |
| SSI TXR |
SSI Technical Extended Range |
http://www.diveSSI.com |
| TDI |
Technical Diving International |
http://www.tdisdi.com |