The Oosterschelde is a large tidal saltwater estuary and the core of the largest national park in the Netherlands, located in Zeeland. It is a significant coastal feature characterized by powerful tidal movement, with 800 billion liters of water flowing in and out daily, creating an ever-changing landscape of exposed sandbanks, mudflats, and salt marshes. This dynamic environment makes tidal planning essential for paddlers. The water body is known for its open, wild character with wide horizons between sandbanks, and it can provide a thrilling sea kayaking experience with waves and wind. Key engineering landmarks define the scenery, including the Oosterscheldekering storm surge barrier at Neeltje Jans and the 5-kilometer-long Zeeland Bridge connecting Schouwen-Duiveland and Noord-Beveland. Public trailer ramps are plentiful along the waterfront for launching, with access at Jachthaven Wemeldinge and Brouwersdam noted as a popular spot. The area is rich in marine wildlife; paddlers may spot seals and porpoises, and the exposed areas at low tide attract countless birds. The water is clean and supports vibrant underwater life including lobsters and sea anemones. Given its exposed nature, conditions can be challenging, and paddling here is considered more strenuous than on inland lakes, requiring proper sea kayaking equipment and preparation for open water, wind, and waves.