Reef structures

Reef structures are large, underwater formations made primarily from the calcium carbonate skeletons of corals and other marine organisms. These vibrant ecosystems develop over time in shallow, warm, and clear ocean waters, providing habitat for diverse marine life. Corals secrete their skeletons as they grow, gradually building complex structures that protect coastlines from erosion, support fisheries, and promote biodiversity. Reefs can be extensive and resilient but are sensitive to environmental changes like pollution and climate change, which threaten their health and sustainability.