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Omega-3 essential fatty acids, antibiotics, obesity – are these boring subjects? Maybe not.

Three hundred thousand fish, escaping confinement, jumped into the Salish Sea from human-built pens August 19 and sent me on an Internet surfing orgy – only to find there is hot debate over the health benefits of wild fish over farmed fish.

Farmed fish are over half of the fish consumed by humans worldwide.

Putting more than a million fish in an enclosed pen is analogous to “industrial” chicken farms, containing massive, windowless sheds, each holding tens of thousands of birds. The chickens...