Coastlines are the areas where land meets the ocean or sea. They can vary greatly in shape and size, featuring sandy beaches, rocky cliffs, or marshy wetlands. Coastlines are dynamic environments, constantly shaped by natural forces like waves, tides, and currents. These regions are important for both ecosystems and human activities. They provide habitats for various wildlife, including birds and marine species. Additionally, coastlines are popular for recreation, tourism, and fishing, making them vital for local economies and communities. Coastal management is essential to protect these areas from erosion and pollution.