What sea defenses do they use in happisburgh?

In Happisburgh, the primary sea defenses include a combination of beach nourishment, groynes, and rock revetments. Beach nourishment involves adding sand to the beach to enhance its width and absorb wave energy. Groynes are structures built perpendicular to the shoreline to trap sand and reduce erosion, while rock revetments help protect the coastline from wave action and prevent further erosion. These measures aim to manage coastal erosion and safeguard properties in the area.