I am a PADI instructor and I chose PADI as it was the 1st certification agency in the world
If you mean largest or most wide-spread, then arguably yes. Chronologically though several agencies predate them, NAUI for one
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I am a PADI instructor and I chose PADI as it was the 1st certification agency in the world
If you mean largest or most wide-spread, then arguably yes. Chronologically though several agencies predate them, NAUI for one