ANDI
Last updated September 7, 2026
American Nitrox Divers International, founded in 1988 by Ed Betts and Dick Rutkowski, was one of the first agencies to standardize training for enriched-air (nitrox) diving — ANDI calls its version "SafeAir." Its catalog has since grown to cover technical and rebreather diving, gas blending, and hyperbaric chamber operation alongside its nitrox roots.
Tec Courses Offered by ANDI
Instructors Certified by ANDI
Thailand
Dive Centres with ANDI Instructors
We're still building out the directory country by country, so this list isn't every ANDI instructor or dive centre in the world — more locations are coming soon.