Description:13 48 50 00 England, demonstration of an emergency method to help in the sea-beds. Soldier puts a dress of scaphandrier. Close-up man with mask. The other men in capsule watch operation. Man turns sort of crank. Man by a system of air meets himself propelled and repatriated in the surface. Man went back up and floats on the sea. Rather futuristic overall, looks like cosmonauts, extraterrestrial.