Coastal areas refer to regions that are located along a coastline, which is the area where land meets the sea. These areas can include beaches, cliffs, estuaries, lagoons and other geographical features that are influenced by the ocean. Coastal areas often have unique ecosystems and habitats that support diverse plant and animal life. They also provide important resources for human populations such as fishing, transportation, tourism, and recreational opportunities. However, coastal areas can be vulnerable to natural disasters like hurricanes, tsunamis, and sea level rise due to climate change.