Coastal features are natural formations found along the edges of oceans, seas, and large lakes. These include beaches, cliffs, dunes, and estuaries. Beaches are sandy or pebbly areas where land meets water, while cliffs are steep rock faces that rise sharply from the sea. Dunes are hills of sand formed by wind, and estuaries are areas where freshwater from rivers meets saltwater from the ocean. These features are shaped by various processes, including erosion, sediment deposition, and wave action. Tides and currents play significant roles in altering coastal landscapes over time. Understanding these features is essential for coastal management and conservation efforts.