Artificial reefs are man-made structures placed in oceans or large bodies of water to promote marine life. They can be made from various materials, such as concrete, steel, or even sunken ships. These structures provide habitats for fish and other marine organisms, helping to enhance biodiversity and support local fisheries. The primary purpose of artificial reefs is to create new ecosystems where marine life can thrive. They can also help reduce coastal erosion and improve recreational opportunities, such as diving and fishing. Overall, artificial reefs play a significant role in marine conservation and sustainable resource management.