+A **seawall** is a [coastal defense](/wiki/coastal_defense) structure built parallel to the shore. Its purpose is to protect inland areas from wave action, [storm surge](/wiki/storm_surge), and erosion caused by the sea. These robust barriers stand as a vital shield against the ocean's persistent forces.
+## See also
+- [Breakwater](/wiki/breakwater)
+- [Coastal erosion](/wiki/coastal_erosion)
+- [Flood control](/wiki/flood_control)
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