Coral reefs are vibrant underwater structures formed by colonies of tiny animals called coral polyps. These reefs provide essential habitats for a diverse range of marine life, including fish, invertebrates, and other organisms. They are often referred to as the "rainforests of the sea" due to their rich biodiversity. In addition to supporting marine life, coral reefs play a crucial role in protecting coastlines from erosion and storm damage. They also contribute to local economies through tourism and fishing. However, coral reefs are threatened by climate change, pollution, and overfishing, making their conservation vital for marine health and human livelihoods.