Swarm of 'massive and unpredictable' jellyfish shut down nuclear power plant

GRAVELINES, France (WKRC) — A swarm of jellyfish shut down a large nuclear power plant.

The Guardian reported that the Gravelines nuclear power plant, one of the largest in France, shut down automatically on Sunday after a swarm of jellyfish entered the water intake systems used to cool the coastal reactors.

French nuclear company EDF said the filter drums of the pumping stations became packed with a “massive and unpredictable” swarm of the marine creatures.

The event did not affect the safety of the facilities, staff or the environment, The Guardian reported. The outlet said that jellyfish swarms have closed nuclear and coal power plants in Sweden, the US, Japan and even caused a major blackout in the Philippines in 1999.