Hello, Having a little chat in the pub last night, we got on to skydiving vs bungee jumping. I said I would rather try a http://en.wikipedia.org/wiki/Halo_jump" [Broken] than a bungee jump. This took a slightly odd turn, and we were trying to figure out whether in the absence of a parachute, one would be better off landing on water or a cushion of marshmallow. I am aware that landing on water from a great height can kill you. Would the same be true of marshmallow? What are the contributing factors - surface tension and density? Any thoughts appreciated! Matt.