Scottish salmon is sold all over the world, but the fish come from breeding farms with methods that are condemned by environmental groups. The intensive farming of salmon, in large pens where there are too many fish, leads to them dying before they reach adulthood, mainly because of a flesh-eating parasite: sea lice. There are fears that the sea lice are now spreading far beyond the farms, contaminating wild salmon in rivers. Our France 3 colleagues report, with FRANCE 24's Olivia Bizot.
>> The tiny parasite threatening your salmon sushi
Programme prepared by Jennie Shin.
