Reg Braithwaite
Contributor
You must have one, it says so in the instructor manual and if an instructor will pass you without one then you really didnt pass the PADI Rescue Diver course and he shouldnt be teaching it. I am sorry for my rant, it wont happen again.
Well, if it says so in the Instructor's manual, then that settles all debate, doesn't it

After taking my training with said snorkel, I will use my new-found judgment to decide whether a snorkel is something I wish to add to my dive gear. If it is such a great idea, I'm sure that will be made obvious by the training.