The future of fish looks a lot like an underwater UFO.Half a mile off the coast of the Big Island of Hawaii, vast mesh cages are suspended on 65-foot steel poles. Inside each, 50,000 silver and yellow fish dart through the clear ocean water. They are a Hawaiian breed known as kahala, relatives of the Japanese hamachi or yellowtail, farmed in 200-foot-deep water by Kona Blue Water Farms.More
