Jeremy Paxman in the Financial Times on how the fixation with salmon farms as a rural job creator requires such adaptation of the environment that the farms don't need to be in such locations:
Geography, though, is an insuperable problem. Salmon farming has political appeal because it seems to offer employment in these Highland communities that have a powerful romantic hold over Scottish identity. Once you use land-based systems, with manufactured salt water, why locate them in the Highlands at all? It could be much more economical to build them somewhere near the markets of southern England or the airports supplying export destinations. Would you buy Loch Hounslow salmon?