Chile's salmon farms lose $800m as algal bloom kills millions of fish

High ocean temperatures helped cause toxic bloom that has wiped out up to 20% of Chile's total production for the year

A deadly algal bloom has hit the world's second biggest salmon exporter, Chile, where nearly 23 million fish have already died and the economic impact from lost production has soared to $800m (565m), industry and government sources told Reuters.

The dead fish could easily fill 14 Olympic-sized swimming pools, said Jose Miguel Burgos, the head of the government's Sernapesca fisheries body.