In a little more than 50 years, the population of wild North Atlantic salmon has plummeted by 75%. Today, it is estimated that fewer than 60,000 exist in and around Iceland. Unless we do something soon, we may be condemning what Icelandic environmentalist and wild fish advocate Orri Vigfússon has called the “king of fish” to extinction. Warmer waters caused by climate change already pose a potential mortal threat to wild salmon (Salmo salar). If Iceland’s legislature passes the latest draft of its aquaculture bill and opens the country to more salmon farms, the fish will be headed toward disappearance even faster. I’ve visited Iceland regularly since 1960 and have personally seen the decline of wild salmon in the rivers. Expanding open net-pen fish farming in Iceland would compound an already critical problem and open the country to disaster, both for wild fish and the environment. It is no secret that these farms are ecological scourges, even when they function as designed. But when they fail, the effects are catastrophic. A wild Atlantic salmon returning to its home river. Image via IRD Duhallow/Raptor LIFE. If you’ve never seen an open net-pen salmon farm before, picture an array of massive floating cylindrical cages that run 30-50 meters (about 100-160 feet) down from the surface of the water. There may be 16 pens on a farm, each holding 100,000 salmon or more. Feeding such huge numbers of carnivorous fish takes millions of pounds of food made with fishmeal and oil sourced from…This article was originally published on Mongabay

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