The Oder Estuary is a significant waterway located in northeastern Europe, where the Oder River meets the Baltic Sea. This estuary serves as an important ecological zone, supporting diverse wildlife and various habitats. It is also a crucial shipping route, facilitating trade and transportation between Poland and Germany. The estuary is part of the larger Oder River system, which flows through several countries, including Czech Republic and Poland. The surrounding area is characterized by wetlands and marshes, making it vital for bird migration and other species. Conservation efforts are in place to protect this unique environment.