What is an Estuary and what is the largest estuary in the US?

An estuary is a coastal area where freshwater from rivers and streams meets and mixes with saltwater from the ocean, creating a unique and productive ecosystem. Estuaries are vital for numerous species of fish and wildlife, serving as nurseries and habitats. The largest estuary in the United States is the Chesapeake Bay, which spans parts of Maryland and Virginia and is renowned for its biodiversity and ecological significance.