All commercial salmon fishing from Vancouver to Mexico has been banned for the next two years due to overfishing, a problem that seems to be affecting the whole planet. But it can be different if some changes in ingenious farming methods could be made which address the problems which have made “farm raised” on the package the skull-and-crossbones equivalent.
It is said that marine biologists in Scotland have developed a method of allowing the salmon to swim into chosen lochs, closing off the opening with nets, then fishing as demand dictates. The natural purging of the water in the lochs addresses the contamination issue, and the salmon would have gone there anyway, so no competition with the local fish.
According to biologists there is a system consists of a 65-foot tower surrounded by the pens which are anchored to the ocean floor. By pumping air or water into the tower, the pens can be raised or lowered for harvesting. As these pens are located far offshore the water remains clean and salmon raise in better way. It is clear that with some change sin fish farming salmon can never be out of market or consumers’ table.
