Sea lice, parasites slowing the expansion of Norway's salmon-farming industry, are seen in a Petri dish...
Sea lice, parasites slowing the expansion of Norway's salmon-farming industry, are seen in a Petri dish at Cargill's research centre in Dirdal, Norway, August 1, 2018. Picture taken August 1, 2018. To match Special Report OCEANS-TIDE/FUTURE REUTERS/Clodagh Kilcoyne