Vattenfall on Instagram: "Nuclear power plants require large amounts of seawater for cooling. As this water circulates through the plant, it heats up before being released back into the ocean. At the Forsmark power plant in Sweden, the water first passes through the enclosed sea area, named Biotestsjön lake. This lake has thus become a unique research hub for examining how warm seawater impacts local wildlife. Species that prefer cooler waters have largely moved to other areas, whereas species l