One of the unique features of Assateague Island, MD is the Wild Ponies. They roam up and down the beach, through the parking lots poop on the sidewalks. They aren't even phased by all the people around. Once a year they herd hundreds of them across the bay to the mainland where they sell the horses to people who will train and ride them. It helps keep the numbers down and is a VERY big event in the area.