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Advantages
- Sea Wall - concrete wall prevents erosion and acts as a barrier to flooding
- Rock Armour - boulders piled up absorb wave energy and reduce erosion and flooding. Fairly cheap
- Groynes - wooden or stone fences create wider beaches which slow the waves and gives a greater protection from flooding and erosion. Fairly cheap
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Disadvantages
- Sea Wall - creates a strong backwash and erodes under the wall. Also very expensive and hard to maintain
- Boulders are moved around by strong waves
- Groynes - Starve beaches further down the coast which leads to narrow beaches no protecting the coast as we'llwe'll
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