What is a broad estuary?

A broad estuary is a large, typically wide body of water where a river meets the sea or ocean, resulting in an area characterized by saltwater and freshwater mixing. These estuaries often feature extensive tidal flats, marshes, and diverse ecosystems that support various plant and animal species. They serve as important habitats for wildlife, nursery grounds for fish, and critical areas for recreational and commercial activities. Broad estuaries also play a vital role in filtering pollutants and protecting coastal areas from erosion.