I think fear, anxiety and panic are three very different things. Fear is a very sane, normal thing to experience when a danger arises. Fear alerts you that something is not right, so you might take the appropriate action to be safe (unfortunately, as animals, our first reaction when confronted to fear is : RUN. Which underwater could translate into BOLT TO THE SURFACE. Thats where we need to stop and breathe and think and find a more appropriate solution).
I would describe anxiety as a fear with no real cause. You fear a danger thats either imaginary (what if a big shark suddenly showed up looking for food ?) or not relevant to the situation youre in (thinking about problems at the office while diving). In that sense, it is irrationnal fear, but it doesnt have to lead to irrationnal behavior. Just as with «real» fear, you can still stop, breathe and think. The trick being that its easier to find a response to a clearly identified problem (Im tangled in a fishing net) than to one thats on your mind but not in your face.
Both fear and anxiety (as well as drugs, narcosis and exertion) can lead to panic, which is the total loss of control of oneself.
Its only my opinion, Im no doctor or anything.
My point being : experiencing fear underwater doesnt necessarily mean youre the anxious type, maybe youre just being aware of the potential dangers of the situation. And if even if you are prone to anxiety, not only can you avoid panic, you may also react very well when faced with real danger.
Ive experienced that many times (unlated to diving though). Im the kind of person who will be constantly fretting over little things (will I be able to do this ? What if this happened ?
) but when sh** happens, everything seems to clear up in my mind and Im usually the one handling the problem at hand while the calm and collected are still wondering what they might do.
One last thought : being so aware of danger, nervous people might be more focused on safety than fearless divers. So they might become good divers as long as they learn how to control their feelings. (Hope thats true and not just wishful thinking. Time will tell).
Anne-laure