Reef balls are artificial structures designed to promote marine life and restore coral reefs. Made from concrete, these spherical formations provide a habitat for various marine organisms, including fish, corals, and invertebrates. They help improve biodiversity and protect shorelines from erosion. These structures are often deployed in areas where natural reefs have been damaged or degraded. By creating a stable environment, reef balls encourage the growth of coral and other marine species, contributing to the overall health of the marine ecosystem. Their use is part of broader efforts in marine conservation and habitat restoration.