A jellyfish species that has been wreaking havoc on Norway’s salmon industry has made its way to Scotland, causing significant damage and prompting calls for urgent action.

The string jellyfish has killed millions of salmon in Norwegian sea farms with officials urging an extermination of affected stocks.

Now the jellyfish has been reported at several sites in Scotland and to date has caused the death of more than 200,000 farmed salmon. Landed salmon lie on a wet surface

Dale Vince, the eco-industrialist and founder of the Green Britain Foundation, which has been actively campaigning for increased scrutiny and regulation of the industry, said: “This jellyfish attack is the latest example of how the fish farming industry is failing to cope with environmental challenges. We routinely see them using the land and sea as a sewer for their toxic business, and now nature is fighting back.”