A Coastal Plain is a flat, low-lying area of land adjacent to a coastline. These regions are typically characterized by sandy soils and are often formed by the accumulation of sediments from rivers and ocean waves. Coastal plains can be found in various parts of the world and are important for agriculture, as they often have fertile land. Coastal plains are also significant for their ecosystems, supporting diverse wildlife and plant species. They can include wetlands, marshes, and estuaries, which serve as crucial habitats for many organisms. Notable examples of coastal plains include the Atlantic Coastal Plain in the United States and the Gulf Coastal Plain.