Coral reefs support marine life in multiple ways. They provide shelter and habitat for a wide variety of marine species, including fish, invertebrates, and plants. Coral reefs also act as breeding grounds and nurseries for many marine organisms, helping to sustain populations. Additionally, coral reefs contribute to the ocean's biodiversity and overall health by creating complex ecosystems that support a web of interconnected life forms. The structure of coral reefs also helps protect coastlines from erosion and storm damage.