Mowi Canada East reports 166,262 farmed salmon died at two sites near Chaleur Bay on Newfoundland’s south coast, blaming repeated sea lice infestations intensified by warm surface waters, low freshwater runoff, and calm winds. The incident follows earlier 2025 mass mortalities linked to a thermocline inversion and warm, low-oxygen conditions.

Northern Harvest Sea Farms is busy cleaning pens of dead salmon, and the province's head aquaculture vet says higher-than-average water temperatures are to blame.