You're probably heard something about the problems with the way farmed salmon are being raised of the coast of British Columbia and other places. The standard method is called open-net pen farming. The main problems with that are the heavy amounts of effluent (a polite euphemism for fish crap) and the sea lice that escape from open-net pens.
There's a better, smarter way to farm-raise fish. It's called closed containment. AgriMarine Industries, based in Campbell River on Vancouver Island, plans to open its first closed-containment farm in May. Closed containment doesn't let effluent escape; it treats and removes it from the water fish are raised in. And because the containment walls are fiberglass instead of open nets, parasites like sea lice can't escape to kill juvenile salmon.
We know AgriMarine's system works. Scott Wallace from the David Suzuki Foundation's marine team is one of the company's advisors and environmental consultants.





Donn
What about the welfare of the salmon themselves?
Doesn't keeping them in cages subvert their natural migration instincts?
How many fish per cage?
At any rate, is it not the case that all carniverous fish farming operations are net consumers of fish? (That is, they consume more fish than they produce).