Estuaries are coastal regions where freshwater from rivers and streams meets and mixes with saltwater from the ocean. These areas are characterized by tidal influences and are often partially enclosed by land, leading to unique ecological conditions. Estuaries can take the form of lagoons, bays, or river mouths. The mixing of saltwater and freshwater creates a specific environment that supports diverse habitats and a wide range of plant and animal species, making estuaries one of the most productive ecosystems in the world.
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