Vancouver Sun: As the global population grows, there is an increasing need to supply seafood without fishing the oceans empty. The farmed seafood industry has been criticized for inferior quality products and unfriendly environmental practices, which have included contamination of waterways with foreign species and disease outbreaks. But as technology and practices improve, the aquaculture industry says it has cleaned up its act and can provide Canada with seafood that is both sustainable and economically rewarding.