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Jellyfish (Pelagia noctiluca) invasion has wiped out Northern Ireland’s only salmon farm, killing more than 100,000 fish.

Billions of small jellyfish, known as Mauve Stingers (Pelagia noctiluca) , flooded into the cages about a mile into the Irish Sea, off Glenarm Bay and Cushendun.

The jellyfish covered an area of up to 10 square miles and a depth of 35 feet. Rescuers tried to reach the cages but the density of fish made it impossible.

It is rare that these species of jellyfish are in coastal waters this far north, but it is common to see blooms of different species of animals and algae in seas, in the natural environment the Salmon would have swam under the swarm to escape.

It would be difficult for the fish farmers have stopped the invasion I guess if given enough time they may have been able to surround the cages with a finer net to stop the jelly fish.