Fish_Whisperer:I've dove with Del Mar Aquatics for the past three years that I've been going to Cozumel, and no one has ever said a single word to any of us about not wearing gloves or having a dive knife, or anything else. And even though I'm wearing gloves, I don't touch anything.
That doesn't mean it's ok...just because a shop doesn't enforce the rules doens't mean they don't exist.