Waddenhaven Den Oever is a marina situated close to the Afsluitdijk on the Waddenzee side, near the IJsselmeer. The harbor includes a dedicated section for visiting boaters, with catway moorings and a maximum depth of 3 meters.

The surrounding area offers a range of activities, including Wadden Sea cruises, sport fishing, seal-watching trips, mudflat walking (wadlopen), and shrimping. Every Saturday morning a fresh fish market is held at the fish auction on the harbor grounds.