wave cut platforms

Wave-cut Platforms
Wave erosion forms wave-cut platforms (benches) along the coast: These are horizontal benches of rock that form in the surf zone, where waves break and scour rocks on the bottom. The wave-cut platform meets the shore at a sea cliff.
Waves undercut the bases of these cliffs until they collapse, and so the cliffs retreat inland. Uplifted marine terraces are wave cut benches that are now above sea level.