Hi
You may have seen on worldwide television the Scarborough Hotel falling into the sea.
I live 2Km away. The major cause of erosion is not the sea but rain water.
Newton's Law of Motion 1687, water essential for life unique combination of solvent power.
1cu meter water = 4,000Kg. 150MN/m2 will cut thro steel.
Water causes:
Pneumatic action, compressing air in cracks.
Abrasion, fragments scrape away the rock
Attrition, smashing fragments together which results in wearing down to sand and silt
Scour, removes loose material
Corrosion, salt's dissolve chemicals in rocks
We have frost but heat also expands.
A possible solution, improve drainage and plant in the Uk we use Rubus fruticosus.