Bathysphere operations create severe psychological challenges through confined space conditions in 1.5-2.0 meter diameter spheres. Crews face claustrophobia, sensory deprivation from complete darkness & silence, temporal disorientation from loss of natural light cycles, & physiological stress including anxiety-induced cardiovascular changes & motion sickness. Specialized crew selection adapts astronaut criteria while comprehensive training programs utilize pressure chamber simulation, emergency rehearsal, & psychological preparation techniques including meditation & stress management. Communication systems provide essential psychological support while multi-person crew dynamics require careful role definition & conflict resolution protocols for mission success.