The Oosterschelde estuary is a large tidal estuary located in the southwestern part of the Netherlands. It is part of the Zeeland province and connects the North Sea to the Oosterschelde National Park. The estuary is known for its diverse ecosystems, including mudflats, salt marshes, and rich marine life. The Oosterschelde estuary plays a crucial role in flood protection and water management in the region. It was significantly altered by the construction of the Delta Works, a series of dams and barriers designed to protect against flooding. This engineering project has helped to stabilize the estuary's environment while maintaining its ecological significance.