Atlantic salmon from Cooke Aquaculture have escaped in the Pacific — Quartz

It’s unclear whether or not these Atlantic salmon will affect the Chinook salmon population. The concern is that the Atlantic salmon will outcompete Chinook salmon for food, breed with them to create hybrids, or spread diseases like sea lice.
“What my research showed is that they do escape, they do survive, they will ascend rivers, they will reproduce with each other and they will produce viable offspring that are competitively equal or superior to Pacific salmon,” John Volpe, an ecologist at the University of Victoria, told the Globe and Mail.