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NOAA Photo Library Image - fish2203

For reasons not completely understood, in some years the anti-cyclone is less powerful than normal. The weaker winds it produces fail to draw cold waters up to the ocean's surface, thus opening the way for warm, nutrient-poor tropical waters. These changes in water temperature and climatic conditions are known as "El Nino".

Image ID: fish2203, NOAA's Fisheries Collection

Category: Fisheries/Biological Oceanography/

High Resolution Photo Available

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Last Updated:
November 10, 2017