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Portal:Ecology/Did you know/12

From Wikipedia, the free encyclopedia
... marine ecosystems are among the largest of Earth's aquatic ecosystems? They include oceans, salt marsh and intertidal ecology, estuaries and lagoons, mangroves and coral reefs, the deep sea and the sea floor. They can be contrasted with freshwater ecosystems, which have a lower salt content.
(Pictured left: Coral reefs form complex marine ecosystems with tremendous biodiversity.)
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