kayakers on a sand flat resting during a kayaking trip on wadden sea, lower saxony, germany

active activity back view cloudy copy space copyspace east friesland frisia europe european german germany group horizon kayaking trip kayaks landscape leisure low tide lower saxony national park nature niedersachsen ostfriesland outdoor pausing people rear recreation resting sand flat sandflat sea tidal tourism tourists unesco world heritage vacation wadden waddensea water watersports