Vegetation that thrives in sand dunes help protect inland areas. Sadly, a lot of our native coastal areas have been destroyed by development of one kind or another. During the hurricane season, the loss of these dunes and plants allows the seas to surge across the low lying areas they once protected. Sea oats are found in the southeastern parts of the US and throughout the Caribbean. Beautiful and useful in many ways, sea oats, mangroves, and other coastal vegetation play a bigger role in our world than is often acknowledged.