Salmons and salmon farms

Many environmentalists believe salmon farms could have a catastrophic effect on the world's wild salmon populations. Concentrations of solid-waste and nitro gens from farmed pens can poison marine life and many researchers fear that salmon farm escapees could soon overrun and decimate wild stocks. As of 1999. a million salmon had escaped from farms in Puget Sound and British Columbia alone. Although farmers use dogfish to track the escapees, most ultimately find their way to freedom. Fish that are caught are returned to the farms, where they face intense grilling over an open flame for 8-10 minutes.