An artificial reef is a man-made structure placed in the ocean to promote marine life. These reefs can be created using various materials, such as concrete, steel, or even sunken ships. They provide habitats for fish and other marine organisms, helping to enhance biodiversity in areas where natural reefs are damaged or absent. Artificial reefs also serve recreational purposes, attracting divers and fishermen. By creating new ecosystems, they can help support local fisheries and improve the overall health of marine environments. Properly designed artificial reefs can mimic the complexity of natural reefs, offering shelter and food for various species.