An indentation cut into a sea cliff at water level by wave action.

A wave-cut platform is usually found at the base of a cliff.

wave cut cliffs are formed by wind and tide driven waves

Wave-cut platforms begin forming as destructive waves hit against the cliff face, causing undercutting.

This destruction of the base of a cliff may cause the cliff to eventually collapse. The collapsed material will eventually be weathered in to even smaller particles.

Wave cut platform.