Dude, you are likewise one misinformed human. Farmed seafood is a purely for profit industry that is bad for the environment and ecosystem and produces a tasteless disgusting product. HATCHERY fish rearing, on the other hand, is a state (Fish and Wildlife)action that supplements and substitutes the natural process of fish spawning because of the decimation of natural fish populations due to destruction of spawning habitat, water quality, dams, and fishing.
Natural salmon runs still exist in Washington, but most purely natural runs are gone from Washingtons rivers and are completely dependant on hatcheries for their existence.
Farmed salmon operations are primarily located in the Washington and BC coastal areas (primarily BC because Canada has less strict enviro reg's). This process involves huge holding pens for growing east-coast salmon, a completley different species. Farmed fish is bad because the high concentrations of fish food and fish shit fuck up the water quality and because these fish escape and may breed with native salmon fucking up the genetics.