Hard

• Sea Wall

  • Concrete walls places at the foot of a cliff to prevent erosion.
  • They are curved to reflect the energy back to the sea
  • Unfortunately they're expensive
  • Unfortunately the waves can still break and erode the wall
• Rock armour

  • Large boulders at foot of a cliff
  • They break the waves and absorb their energy
  • Unfortunately it's expensive
  • Fortunately they're cheaper than sea walls
• Gabions

  • Rocks held in mesh cages and placed in areas affected by erosion
  • Unfortunately it's not very strong and looks unnatural
  • Fortunatlely it's cheap
• Groynes

  • Wooden or rock structures built out at right angles into the sea
  • Unfortunately they look unattractive
  • Fortunately, they build a beach, encouraging tourism