Coastal cities are urban areas located along the coastlines of oceans, seas, or large lakes. These cities often benefit from access to maritime trade, tourism, and fishing industries. Their economies can thrive due to the natural resources and transportation opportunities provided by their proximity to water. Many coastal cities, such as Miami, San Francisco, and Sydney, are known for their beautiful beaches and vibrant waterfronts. They often face unique challenges, including the risk of flooding and hurricanes, which can impact infrastructure and local communities. Coastal cities also play a crucial role in environmental conservation efforts to protect marine ecosystems.