The frequency and scale of mass mortality events among farmed salmon have increased since 2012, according to a study published in Scientific Reports. In the paper from the University of Victoria, British Columbia, School of Environmental Studies, researcher Gerald Singh and colleagues analyzed salmon mortality data from Norway, Canada, the UK, Chile, Australia, New Zealand — countries that produced over 92% of the world’s farmed salmon in 2021 — between 2012 and 2022.