Who would have expected that a group of soft-bellied invertebrates would cause a nuclear plant to go offline? The Torness Nuclear Power Station's two reactors were shut down after swarms of jellyfish were discovered blocking the power plant's underwater cooling filters. These filters were designed to deter underwater contaminants from entering the cooling system. Located in Edinburgh, Scotland, the power station's staff turned off the reactors as a precautionary measure only, and the public has been assured that there was no cause for alarm. Torness relies on two Advanced Gas Cooled Reactors for dissipating heat, but also uses cooling from sea water for increased safety. The power plant has since turned one of its reactors back on, and will resume normal operations sometime next week, after the area has been completely cleared of jellyfish. It is speculated that recent changes in the water temperature may have been the cause for the sudden increase in jellyfish population in the area.