When you complete the PADI Divemaster course, you become a member of PADI (Professional Association of Diving Instructors.) The “Professional” part of the acronym means, that it’s something you can do for living. It’s an actual job. Many scuba divers who have gotten certified through PADI believe that they are members of PADI. This isn’t exactly discouraged for obvious commercial reasons, but it’s factually incorrect. Members of PADI are divemasters, assistant instructors, instructors and upwards in the PADI echelon.
Thus becoming a divemaster can really be considered vocational scuba training. You’ll learn what you need to know to work in recreational scuba diving such as guiding certified divers and assisting instructors when they teach diving courses. You’ll also learn how to take people who have never scuba dived before out on intro dives and you’ll help divers who’s been out of the water for a while refresh their skills in a safe manner.