Interestingly enough, this question was asked by the Divemaster who conducted our orientation dive at Cocoview in December to the group he was leading. However, it came up as...anybody Instructor? No answer, anybody DM?, no answer, anybody Rescue?, no answer, anybody Advanced? (in a slightly higher pitch of voice), still no answer and finally with a smirk on his face...anybody Open water? Nobody said anything but we all started laughing...and then we proceeded with the dive. Not sure how amused he was.