Ask us anythingThe thin zone along a coastline where freshwater systems and rivers meet and mix with a salty ocean (such as a bay mouth of a river salt marsh lagoon).?

The area where freshwater systems and rivers meet salty ocean waters is known as an estuary. Estuaries are vital ecosystems that provide habitats for diverse wildlife, serve as nurseries for fish, and help filter pollutants from water. They also act as buffers against storm surges and coastal erosion, making them crucial for environmental health and coastal communities.