Farmed salmon is pollution when it spills into the habitat of wild salmon. There needs to be strong worldwide regulation to enfore grave circumstances to those who pollute, so grave that they finally start to properly operate these farms in a manner that escape will not occur. If no such regulation can't be put in place, then perhaps some legal precedent to sue the pants off any company who is negligent in this respect. Anything to put the impetus to stop these escapes into the exploding salmon farming industry.
It's ironic that when we talk about tweaking around with human genetics, we get ourselves into a furious debate. However, when it comes to genetic pollution for salmon, most don't seem to care. It's really going to be up to sportsmen and environmentalists to wage this war since once again, the concerned minority will have to belly up to the bar in an ambivalent society.
IFFF Certified THCI @ 2005
Capeflyfisher Guide Service
Island Hopper, Guitarist, Incurable Dreamer
and Founder, Worldwide Flyfishing Forum