Beach structures are man-made constructions designed to protect coastlines and enhance recreational areas. Common types include seawalls, jetties, and groins. Seawalls are built parallel to the shore to prevent erosion, while jetties extend into the water to stabilize inlets and harbors. Groins are structures placed perpendicular to the beach to trap sand and reduce erosion. These structures can impact local ecosystems and sediment movement. While they help protect property and maintain beach access, they may also lead to unintended consequences, such as increased erosion in adjacent areas. Understanding their effects is crucial for effective coastal management.