An increase in the temperature of the sea this summer has cost the salmon industry around A$15m (US$7.75m), according to estimates from the Tasmanian Salmon Growers' Association. Salmon grow more slowly in waters above 17°C, temperatures at which rates of mortality, disease and stress increase. During the 2000-2001 summer, sea temperatures reached 19°C.
Salmon grower Tassal has indicated to the Australian Stock Exchange yesterday that profits for this year could fall to 50% lower than expectations, reaching only A$500,000, because of the temperature increase.