mudflats and dunes of the zwin nature reserve . knokke, belgium.

shore coast wetland sea marsh beach mudflat horizon reservoir plain sand bay ocean landscape prairie river water steppe mudflats zwin nature reserve knokke belgium salt adventure belgian caspia channel channels coastal creeks day dune dunes ecology envrionment fence field fields flanders flat flatland flatlands flemish flowers grass het hike hiking lake lavender lavenders leadwort limonium marshes marshland north plumbaginaceae plumbago pool pools puddle rosemary saltmarch saltwater salty sandy statice summer sunny tide tourism tourist tide tidal