oddible
Contributor
Well, I think the point was to make sure you had a few dives under your belt before you tried Deep or Wreck specialty. So you'd have to do 3 specialties to get your Adventure diver cert before you were allowed to take the Deep or Wreck specialties. Now however you can just take Advanced Class (a misnomer if there ever was one since you can take the 'Advanced' class with a grand total of 4 OW dives) right after your OW cert and be in a Deep dive after only 7 total dives. Seems a bit shaky to me but I suppose that you have to be checked off by an instructor before moving on and if the instructor is worth their weight they won't let you go on the Deep dive until they're comfortable with your buoyancy control and stress level.