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 such as waves, tides, and currents. They play a crucial role in ecosystems, providing habitats for various plants and animals. Human activities, such as construction and tourism, can significantly impact coastlines. Coastal erosion, which is the wearing away of land by wave action, can threaten homes and infrastructure. Conservation efforts are essential to protect these vital areas, ensuring they remain healthy and resilient for future generations.