• Hydraulic action - the force of the waves hitting the shore

• Corrasion- when waves hurl material such as sand or rocks against the shore, or when waves roll particles back and forth across the shore

• Corrosion- when weaker layers of rock dissolve or disintegrate because of sea salt

• Deposition- mainly occurs in calm areas as the wave energy is not high enough to erode or transport material

**Corrasion and erosion are more common in high-energy areas