On Aug. 19 and 20, an undetermined number (estimates range from 4,000 to 185,000) of farmed Atlantic salmon escaped into the waters around Cypress Island, just northwest of Anacortes, Washington. In a region where vast amounts of money and effort have been spent attempting to restore wild salmon runs, this mass escape of non-native fish has caused a public uproar. How could this happen? Will the Atlantic salmon spread disease to wild fish? Will they outcompete native salmon for food or freshwater spawning habitat?

Click here to go to https://www.ucdavis.edu/one-health/atlantic-salmon-escape-problem-pacific-northwest