Shooting rapids without a kayak, playing with some hefty manatees and feeding piranhas by hand! These are the extraordinary activities of an ordinary German businessman Walter Sigl , whose modest manner hides a spirit of daring and determination. His objectives: to film in the relatively unfilmed world of fresh water. This he has done with camera equipment which may seem ordinary too, but the results he achieves are a glorious pictorial celebration of the Orinoco river in Venezuela, strange lakes in Germany and crystal-clear springs in Florida.