You can drive to Mandø at low tide. Just be sure to check the tables so you don’t get washed away by the sea during your 3 mile drive through the marshlands. If you don’t know when the waters will return, the hotel owner will tell you how much time you have before you need to leave. Consider subtracting an hour from his suggestion.
You might find flocks of birds sweeping the sky for no decernable purpose other than the joy of painting smoke in the air. All joined in one huge organism that turns shapes from bizarre to strange and colors from black to white to brown. A woosh like a Tour de France peleton passing you by makes you think of the collective calories burnt by these tiny stunt pilots.
They look like sand pipers but their beaks are bent, Stanley should know more.