A breakwater is a structure built along coastlines to protect harbors, marinas, and shorelines from the impact of waves and erosion. It helps to create a calm area of water, making it safer for boats to dock and for recreational activities. Breakwaters can be made from various materials, including concrete, stone, or steel, and are often designed to absorb and deflect wave energy. These structures can be either floating or fixed, depending on their design and purpose. Breakwaters are essential for coastal management, as they help maintain the integrity of beaches and prevent damage to infrastructure caused by strong ocean currents and storms.