The Gravelines nuclear power station, located in northern France, experienced a significant operational disruption this week due to a large swarm of jellyfish. The marine creatures were drawn into the plant's cooling system, where they obstructed the intake pumps responsible for circulating water to cool the reactors. As a safety precaution, the plant operators were forced to scale back production significantly.

Under normal conditions, the Gravelines facility utilizes six reactors to generate electricity. Following the blockage, the plant reported that five of these reactors were either taken offline or had their output severely restricted to prevent damage to the cooling infrastructure. Only one reactor remained fully operational during the height of the incident.

While jellyfish blooms are a naturally occurring phenomenon in the North Sea, their impact on industrial infrastructure has become a recurring challenge for coastal power plants. The facility's management team worked to clear the intake screens and restore normal water flow, though the incident highlights the vulnerability of coastal cooling systems to sudden shifts in marine life populations. There were no reports of damage to the reactors themselves or threats to public safety, as the shutdown was a controlled response to the mechanical obstruction.