The effect of using sea water for cooling

One major way in which fish and other marine species are affected by nuclear powers plants is when water from the sea is used for cooling. The proposed plants in Kaminoseki will take water from the sea to the north of Nagashima Island. When water is taken from the sea, all the organisms in that water, that are too small to be stopped by the filters, are killed. The number of young fish, larvae, and eggs that are sucked through the filters is huge. This affects the populations of those species in the surrounding area. If those species are fed on by larger species then the larger species will be affected too, and the effect will move up the food chain. Nuclear power plants use an enormous amount of water for cooling. For example the Gravelines plant in France pumps up to 120 cubic metres per second.

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