AdivingBel
Diver
IMHO, like a lot of things scuba, it depends on the circumstances. On the big Corinthians I sometimes dive in the Keys, they take snorkelers (including kids) as well as divers out to the shallow reefs. It is planned for and handled well. The back of the boat is reserved for divers setup and briefings. Otherwise folks mingle a bit but mostly stay in their areas. I've been asked many times by snorkelers (adults & kids) about diving and have happily shown them my rig and explained some of the basics. Hopefully I've encouraged a few to try it for themselves. All in all it's worked out pretty well. Honestly divers kind of get "rock star" treatment and that's kind of fun.