drbill:Mike, agree on the relevance of swimming skills to do cave diving. However, I've never met a diver who got certified for cave diving before he or she did their OW. For the vast majority of divers, swimming skills are important (or should be).
I agree. I would think that any one who is planning on spending time anywhere near the water would want to know how to swim. As Gary pointed out, you might just fall in.
I find it interesting that for the divers you refer to their "drive to survive" doesn't kick in. Heck, I know mine has on the few occasions where I needed it. I've got things to live for... like finally meeting that ultimate dive buddy with benefits!
I'm no psychologist but I think that the "drive to survive" needs some sort of focus.
What I'm getting at is that we know that panic is a problem is diving accidents. The question is, why panic? Whether it's passive panic where the diver does nothing or active panic where lots of energy is expended, it's all a waste of time and never brings the diver any closer to a solution. I think there's so much panic because divers are getting in the water with insufficient tools and skills to draw on in an emergency.