Business / Agriculture / Estuary: Regions of interaction between rivers and near-shore ocean waters, where tidal action and river flow mix fresh and salt water. Such areas include bays, mouths of rivers, salt marshes, and lagoons. These brackish water ecosystems shelter and feed marine life, birds, and wildlife. Estuaries typically include adjoining wetlands.
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Science / Marine Biology / Seasonal Estuary: An estuary in which salinity at any one geographic point changes seasonally (e.g., decreases during the spring melt) MORE
Science / Marine Biology / Vertically Homogeneous Estuary: An estuary in which, at any given location, wind or tidal mixing homogenizes salinity throughout the water column MORE