Step 1 of a wave cut platform?
Destructive waves attack the base of the cliff creating a wave cut notch.
Step 2 of wave cut platform?
Erosion continues creating an overhang at the top of the cliff which eventually collapses
Step 3 of wave cut platform
Backwash then carries the smaller rocks away from the base of the cliff
Step 4 of wave cut platform
Making the cliff retreat inland leaving behind a rocky platform called a wave cut platform