So I'm sitting waiting to jump off the back of the boat for the first dive on the GBR. The skipper, bless him, is doing fins and mask rinse for everyone as we shuffle along. It comes to my turn: Skipper: "[looking at my mask] where's your snorkle?" Me: "Still in the shop" Skipper: "You're supposed to have a snorkle" Me: "Why? I'm going diving, not snorkeling" Skipper: "It's a legal requirement" Me: "[sighs heavily] fine, give me a snorkle I'll stick it in my pocket" Skipper: "Nah, in you go"