The Oosterschelde is the largest and wettest National Park in the Netherlands, a vast tidal estuary located in the province of Zeeland. Originally a river estuary, its character was fundamentally transformed by the construction of the Delta Works, including the iconic storm-surge barrier. Today it functions as a dynamic shallow sea arm, with an estimated 800 billion liters of saltwater surging in and out with each tidal cycle. The twice-daily ebb and flow continuously reshape the landscape, exposing extensive mudflats, sandbanks, and salt marshes at low tide and submerging them again at high tide. This constant tidal energy creates an extraordinarily rich marine environment, supporting a diverse array of fish, shellfish, seaweeds, and invertebrates. The Oosterschelde is renowned throughout the Netherlands and beyond for its Zeeland mussels, Zeeland oysters, Oosterschelde lobster, and cockles — a testament to the exceptional productivity of these waters.