Hydraulic Action: Water is forced into cracks in the cliff, compressing the air. As the wave retreats the compressed air blasts out, forcing the rock apart.
Abrasion: Sediment is thrown against the cliff by the waves. This wears the cliff away and chips off bits rock.
Attrition: Loose sediment from hydraulic action and abrasion, are swirled around by the waves constantly colliding . This wears them down, making them rounder and smaller.
- Wave power is concentrated at the base of the cliff, where abrasion acts forming a wave cut notch