My cousin (a diver) has a husband (MD) who dives doubles, stage bottle and drysuit but only in fresh water because he is afraid of what’s in the ocean! So fear of the fish is not just for non-divers :(
We have talked about my wife here before, she was hit on the head by a DM with his al80 while taking her OW. Now she is paranoid about suited up divers around her and I’ll probably never get her on a diveboat again :(