A sea wall is a man-made structure designed to protect coastal areas from the impact of waves and high tides. It can be referred to by various synonyms, such as a coastal barrier, embankment, breakwater, barricade, or revetment. A sea wall can also be described as a seaward-facing defense structure, a dyke, or a levee. In some cultures, coastal defense structures are built using natural materials such as boulders, stones, and sandbags, and referred to as a seawall, groyne, or jetty. However, the main purpose of all these structures is to prevent erosion and protect shorelines from intense ocean activity, making them a crucial part of coastal infrastructure.