Coastal defenses are structures designed to protect coastlines from erosion, flooding, and storm surges. These defenses can include sea walls, breakwaters, and dunes, which help absorb wave energy and reduce the impact of high tides. They are essential for safeguarding coastal communities, infrastructure, and ecosystems. In addition to physical structures, coastal defenses can also involve natural solutions, such as restoring mangroves and salt marshes. These ecosystems act as buffers, absorbing wave energy and providing habitat for wildlife. Effective coastal management combines both engineered and natural defenses to enhance resilience against climate change and rising sea levels.