From the evening of the 10th to the early morning of the 11th, the Gravelines Nuclear Power Plant in northern France was compelled to shut down four reactor units consecutively. This action was necessitated by the activation of the water pump station's protection mechanism, triggered by an overwhelming presence of jellyfish. Consequently, operations at the entire nuclear power plant were suspended. Notably, two units of the plant had already been offline for maintenance prior to this incident. As the largest nuclear power plant in France, Gravelines boasts a total of six reactors with a combined installed capacity of 5.4 gigawatts.

Despite the disruption, the safety of the nuclear power plant, personnel health, and the environment remained unaffected. The staff is diligently working to diagnose and rectify the situation, aiming to safely resume operations. A spokesperson emphasized that while shutdowns caused by jellyfish invasions are "uncommonly rare," such incidents have occurred in the past. It is speculated that global warming, which elevates sea temperatures, may have accelerated the jellyfish reproduction rate, contributing to this unprecedented event.