The following is a script from ”Salmon in the Sea” which aired on May 11, 2014. Dr. Sanjay Gupta is the correspondent. Peter Klein, producer.
Salmon is the most popular fish on American dinner plates, but most of it is no longer fished out of the sea. Close to three quarters of our salmon is farmed – grown in cages suspended in the open ocean in places like South America, Europe and Canada. It’s a multibillion dollar industry now, but many environmental organizations are concerned these farms could be spreading diseases into the wild. And they’ve issued a red-label warning for farmed salmon, urging consumers to avoid buying the product because of its potential environmental impact. Salmon farmers say the industry has improved over the years, and they’re actually helping to save the last remaining wild salmon in the sea.