Several shots from different angles at Fisheries Research base in district of Lake of the Woods, Kenora, of a researcher mixing phosphate and nitrate additives in motorboat, of him sailing across lake spreading it so that a study can be made of the effects in the future. Various shots of two researchers in motorboat taking water samples for plankton count and checking water temperature with special instruments. Various shots from different angles of scuba divers going in water picking up mud samples in tubes and giving it to scientist on lakeside. Various shots of two scientists in motorboat injecting radioactive carbon in bottles of water for evaluation tests and putting them on racks in water at different depths. MS ZOOM OUT MLS on a sign Fisheries Research Board of Canada. Experimental lakes area, further travel beyond this point is prohibited excepts for authorized vehicles.