AIDA (Association Internationale pour le Développement de l'Apnée / English: International Association for Development of Apnea) is an organization of freedivers and is the single largest organizer of international freediving competitions, rules and regulations. Rules and regulations are discussed and improved continuously and every day around the world new students are trained and earn their certificates.
There are following AIDA freediving certification levels:
| AIDA 1 | AIDA 2 | AIDA 3 | AIDA 4 | |
| Prerequisit (age) | 18 years | 18 years | 18 years | 18 years |
| Prerequisit (swim) | 100m | 200m | 200m | |
| Prerequisit (swim with fins) | 300m | 300m | ||
| Prerequisit (course) | AIDA 2 | AIDA 3 | ||
| Prerequisit (other) | First Aid | |||
| Requirement (STA) | 2:00 min | 2:45 min | 3:30 | |
| Requirement (DYN) | 40m | 55m | 70m | |
| Requirement (CWT) | 16m | 24m | 32m | |
| Minimum Water Sessions | 1 | 5 | 6 | 6 |
| Theoretical exam | no | yes | yes | yes |
Next to AIDA freediving certification there are also other freediving certifications available from SSI, PADI or CMAS.
Sources:
https://education.aidainternational.org/AIDAFreedivingCourses (Retrieved 27.02.2019)
https://www.aidainternational.org/About (Retrievend 02.04.2019)