CSs of an hydroplane's pilot in cockpit. AERIAL SHOTs of lakes and forest at the end of the afternoon, northern Manitoba, of rapids on the Nelson River, of the dam on Smae River, of flooded dead trees. Shots of the river taken through plane's window with PAN on pilot and woman biologist of the "Freshwater Institute" in cockpit, of flowers, of hydroplane touching water of a lake. Several shots from different angles of the two men in boat on lake disengaging fishes from net. Underwater shots of fishes trapped in net, brown colored water, including water surface shots of the two fishermen at work.