From leading natural health newsletter, Mercola.com:

Fish farms are killing off wild salmon. Norwegian policies are making
farmed seafood unsustainable and unhealthy. Open cage salmon farms, used
to raise what is perhaps the most popular type of farmed fish, pose
numerous problems for the environment and public health.

Many environmental experts have warned about the unsustainability of
fish farms for close to a decade now, but nothing has been done to
improve the system. As usual, government agencies and environmental
organizations around the world turned a blind eye to what was predicted
to become an absolute disaster, and now the ramifications can be seen
across the globe.

Farmed fish is now so common, if you bought fish in the supermarket
recently or ordered one in a restaurant, chances are it was farm raised.
(About the only places you can find wild-caught fish these days are
specialty fine-dining seafood restaurants.)

These oceanic feedlots, consisting of acres of net-covered pens
tethered offshore were once considered a wonderful solution to
over-fishing, but the reality is far from it.

As mentioned in the video above, it can take up to 5 kilos of wild
fish and Antarctic krill to produce just one kilo of farmed salmon!

Rather than solving the problem of over-fishing, fish farms are
literally competing with human consumption for what little wild fish
thereare left…

Open cage salmon farms are also decimating natural salmon stocks, and destroy the livelihoods of fisheries across the world.

Read full article here