Jellyfish Turned Into an Unexpected Threat to France’s Gravelines Nuclear Plant After a Huge Swarm Clogged Its Cooling System

Jellyfish turned into an unexpected threat to France’s Gravelines nuclear plant after a huge swarm clogged its cooling system

In a striking environmental incident, a massive jellyfish swarm has compelled the shutdown of reactors at France's Gravelines nuclear plant. The clogged seawater cooling systems have brought significant disruption to power generation. Following a related incident in 2025, the plant introduced enhanced monitoring and fishing strategies. This occurrence underscores the vulnerabilities faced by coastal nuclear installations amidst the challenges po…

A Jellyfish Swarm Shut Down Reactors at One of Europe’s Biggest Nuclear Plants

Almost exactly a year after I wrote about how one of the biggest nuclear power plants in Europe was shut down by a swarm of jellyfish that clogged its cooling system, it happened again. According to Reuters, three reactors at France’s Gravelines nuclear power plant were taken offline Monday after a massive jellyfish swarm clogged […] The post A Jellyfish Swarm Shut Down Reactors at One of Europe’s Biggest Nuclear Plants appeared first on VICE.

How Swarming Jellyfish Overran Three French Nuclear Power Reactors

A "massive influx" of jellyfish forced Electricite de France SA to shut three units at its Gravelines nuclear power plant this week and reduce output at a fourth, reports Bloomberg. Just as summer temperatures surged, 3.2 gigawatts went offline - and the power utility was already facing cuts other nuclear sites as high temperatures reduced the river water available for cooling. More details from ScienceAlert: As Politico reports, the Gravelines …