The erosion and deposition of the sea waves gives rise to coastal landforms.
The sea waves deposit sediments along the shores forming beaches.
Sea Caves: When sea waves continuously strike at the rocks, crack develops. Over time they become larger and wider. Thus, hollow like caves are formed on the rocks. They are called sea caves.
Sea Arch: When sea waves further strike sea caves, over time their cavities become bigger and bigger and finally only the roof of the caves remain, thus forming sea arches. (See fig below)
Stacks: Further, erosion breaks the roof and only walls are left. These wall-like features are called stacks.
Cliff: The steep rocky coast rising almost vertically above sea water is called sea cliff.
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