Saturdays, January 27 and February 24 1 p.m. Journey through the park with a naturalist and explore how sand dunes are the first line of defense for our beach ecosystem. Discover recent coastal storm damage and erosion history, plus learn how to identify the plants that keep it all together. You will even receive your very own plug of American beach grass to plant in our dunes! Pre-registration required. Ages 8 and up. $5 per person.