Here are the key points about coastal management schemes at Swanage: 1. Seawalls - To protect land and property from erosion and flooding by waves. 2. Groynes - To build up beaches by trapping sediment moving along the shore in longshore drift. 3. Beach replenishment - To replace sand lost through erosion and maintain the beach, protecting the land behind. 4. Managed realignment - To allow the shoreline to move landward naturally by breaching seawalls. This reduces costs and works with natural coastal processes. 5. Planting marram grass - To stabilise dunes and prevent/reduce blowouts. The roots bind sand particles.