Six commercial divers were investigated for anxiety responses during a
29-day, open-sea world record dive at 500 meters of depth. Three of s
ix (50%) divers developed anxiety. The authors emphasize the importanc
e of research on personality traits as possible predictors for the dev
elopment of anxiety during deep dives of exceptional depth and duratio
n of confinement. (C) 1995 Wiley-Liss, Inc.