These fish are supposedly quarantined in clean water for up to a year before they are harvested and sent to market to ensure that such elements have been flushed from them. In Canada, there is now genetically modified salmon. Recently, some fish hatcheries have begun to release their farm-raised salmon into the wild to allow the fish to reap the benefits of a natural diet and turbulent waters. Its spawning instincts intact, the salmon conveniently return to the pen. However, the opportunity for interbreeding with wild salmon has made this practice controversial.
Ocean water is pumped in to create a whirlpool current.
The by-products of these fish do not pollute ocean waters. It's simply an Atlantic species that is farm-raised in Chile. News Jobs AP Shopping Archives Entertain.