Sea oats and other beach plants help protect sand dunes, which in turn help protect the mainland from tropical storms and hurricanes.
Grasses Shape and Protect Coastal Dunes in Different Ways - NCCOS
Sand Dunes in the United States - Geography Realm
Beach Essentials You Need For The Perfect Day
Beach Plants and Sand Dunes Were Made for Each Other
Oregon Dunes National Recreation Area - Wikipedia
The Ultimate Guide to Indiana Dunes National Park
Papa” Enthusiasts Pour Into Key West for 2017 Hemingway Days
Open Dunes - Michigan Natural Features Inventory
The Secret Lives of Sand Dunes - Atlas Obscura