A “massive and unpredictable presence of jellyfish” was detected in the filter drums of the plant's pumping stations.

The automatic shutdown resulted from a massive and unpredictable presence of jellyfish that reduced seawater flow to the reactors,” said the power operator.

Gravelines nuclear power plant in northern France was fully shut down on Monday after a ‘massive and unpredictable’ swarm of jellyfish entered the plant’s pumping stations. The power station, located ...

A massive jellyfish invasion clogged the cooling intake systems at France’s Gravelines Nuclear Power Station, forcing several ...

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A massive swarm of jellyfish has forced the shutdown of four reactors at the Gravelines Nuclear Power Station in northern France. According to operator EDF, the jellyfish clogged the pumping station ...

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A swarm of jellyfish forced four reactors at France’s Gravelines nuclear power plant offline after clogging the facility’s cooling filters.