The non-native species of salmon have been reported as far north as Tofino on the west side of Vancouver Island and Campbell River on the island’s east side, according to Byron Andres, head of the federal Atlantic Salmon Watch program.
“Quite a distance. I’m not sure whether we should be surprised by that but they have travelled further than I initially anticipated,” Andres told Gregor Craigie, host of On the Island.
The Atlantic Salmon Watch program has been monitoring B.C. waters since 1991 and in that time has rarely logged confirmed sightings.
Between 2011 and 2017, there were only three confirmed reports of Atlantic salmon in B.C., with some appearing as far north as Hecate Strait and the Kitimat River. There had been zero reports in the three years leading up to the escape.
So now we monitor and try to assess what happens when you release hundreds of thousands of salmon from one ocean into an entirely different ocean. Exactly the sort of science project you get when you play Sorcerer’s Apprentice by manipulating and short-circuiting nature with the goal of farming lots of affordable salmon.
Moving from marine- to land-based or closed-containment aquaculture is a decidedly uphill battle. Terrestrial systems can cost several times as much as sea pens. Even though net-pen farms are restricted to suitable coastal sites, the ocean provides space and water, and free access to water circulation. On land, a similar arrangement may work on a small scale, but be prohibitively expensive on a commercial scale.
Land operations have hidden costs, too, says Tony Farrell, an animal physiologist at the University of British Columbia. Existing terrestrial operations take a lot of energy and produce a lot of greenhouse gases, he says. “They will get better,” he says, but the development of new technologies should proceed in a “positive, but cautious, way.”
I once looked into the many impacts of fish consumption, and how to reduce the impact of eating fish if you give a damn. And while there are definitely better and worse ways to consume fish (the best I concluded is to stick to farmed mussels), I came away thinking it just seems easier to me to simply not eat fish. The impact of that choice is both positive and beneficial to the oceans in countless ways.
Is it really that hard to not eat salmon and tuna? I feel completely out of touch with consumers who feel that their desire to please their palates (yes, salmon is healthy, but there are other ways to eat healthy) outweighs all the profound impacts of fishing and aquaculture on the planet. Yes, that is a judgement. But the cold balance of logic just seems so clear to me.