Short Cuts
John Lanchester: James Cameron under Water, 26 April 2012
“... descend to a maximum of about fifty metres, where the air pressure is six atmospheres, and world-class free divers go down to about a hundred metres, where the pressure is ten atmospheres – more than enough to tell the human body that it doesn’t want to be there. Normally functioning submarines, meaning subs not designed for the special purpose of ... ”