MJH--You are absolutely correct about the slippery slope. I do handle critters, such as hermit crabs, some shrimp, (depending on their mood--skittish ones, no, ...complacent ones, OK... but you are right about divers over estimating their ability at depth. Since I do handle critters, and have been doing so for 43 years, I would be hypocritical to say that no one should touch them. I guess I should have just stayed out of the discussion rather than put my name on something that said it MIGHT be OK to touch something. Your point is well taken, and I realize that I need to be more careful.
We are only guessing what might be stressful to any creature--even ones that we swim beside or scare with our bubbles. We just want to minimize our impact.
On the other hand, anyone who REALLY cares about the reef should support, in my opinion, at least THREE environmental organizations to do something that truly protects the world's environments--one world wide, one national and one local organization. Since this is really a new thread I will stop here.