A swarm of jellyfish has caused one of the largest nuclear power plants in France to shutdown.
It was temporarily closed on Monday after a 'massive and unpredictable' cluster of the sea creatures clogged the pumps used to cool the reactors, French energy group EDF said.
The automatic shutdowns of four units 'had no impact on the safety of the facilities, the safety of personnel, or the environment', according to EDF.
The Gravelines nuclear power plant in northern France, capable of powering five million homes, was brought offline when a fourth reactor shut down.
'These shutdowns are the result of the massive and unpredictable presence of jellyfish in the filter drums of the pumping stations,' the Gravelines plant operator said.
