Zothecula writes: Octopi and squid swim not by swishing a tail, but by expelling a jet of water. This allows them to move very quickly and quietly. Scientists from Germany’s Fraunhofer Institute for Manufacturing Engineering and Automation have now copied this system, in a propulsion system that could ultimately find use in boats, recreational watercraft, or submarines.
"Irrigation of the land with sewater desalinated by fusion power is ancient.
It's called 'rain'."
-- Michael McClary, in alt.fusion