A coastal region is an area where land meets the ocean or sea. These regions are characterized by unique ecosystems, including beaches, cliffs, and wetlands. Coastal areas often have diverse wildlife and are important for fishing, tourism, and recreation. They can also be affected by tides, storms, and erosion. Coastal regions are found all over the world, from the Gulf of Mexico in North America to the Great Barrier Reef in Australia. Many cities, such as San Francisco and Sydney, are located in these areas, benefiting from their scenic views and access to marine resources.