Scuby Dooby:
Everyone panics sometimes, it's fairly common and often a helpful reaction. As to Al M's comment that people who have ever had a panic attack should take up tennis, well, I think he's wrong (and a bit too macho
).
1st reason - If he's right then a majority of divers should quit, now. anxiety under
Maybe the majority SHOULD quit. There's no reason Sturgeon's Law (95% of everything is crap) shouldn't apply to divers, especially in this era of profit driven mania to remove barriers to entry.
Panic is not a helpful reaction. Panic is where rational behavior ends. Panic kills. Those who are prone to panic should avoid activities where panic can kill them. Your "macho" characterization is a needless ad hominem that implies that only machismo would motivate the proposition that there are traits incompatible with diving.
In 18 years of diving and 16 years of teaching, I have never panicked or known anyone, except for one person, who panicked. The one was doing his OW cert dives, and he would have died without immediate outside intervention. I've experienced reverse block so bad it made me vomit, during a night dive - I wasn't happy, but I didn't panic. I know people who've experienced entanglement and loss of all light on a night dive, who didn't panic. I've seen people in real OOA situations who didn't panic. It's not that common, nor should it be.
Most of the people who claim to have panicked or witnessed panic, are incorrect. If they maintained control, they didn't panic. Panic is a one way street until the source of stress/fear is removed. Fear is not panic; stress is not panic; anxiety is not panic. They are all causes of panic. Odds are, if you are around to talk about a negative situation you experienced underwater, you did not panic. In fact, if you have clear recollection of an event, then it wasn't panic.
Good training will, to some limited extent, probe for a person's panic threshhold. If that threshhold is to low, then, yes, as Al said, that person should seek recreational activities to which they are better suited, among them tennis.