Answer: France
Notes: Three of six reactors at Gravelines Nuclear Power Station in Northern France were shut down. The shutdown was caused by a massive swarm of jellyfish clogging the cooling system. The plant is operated by Électricité de France (EDF). Jellyfish are gelatinous zooplankton belonging to the phylum Cnidaria. They are simple invertebrates with stinging tentacles and jet propulsion movement. They lack brains, blood, or hearts and are made of epidermis, mesoglea, and inner layer. Jellyfish blooms disrupt ecosystems by reducing biodiversity and collapsing fish populations.
