Reef is a vibrant and diverse underwater ecosystem made up of coral structures, marine plant life, and an array of colorful fish and other sea creatures. These unique environments are found in tropical waters all around the world, providing a vital habitat for a wide variety of marine species. The coral reefs themselves are made up of calcium carbonate secreted by tiny coral polyps, creating intricate and delicate structures that support a complex web of life. Unfortunately, coral reefs are currently facing threats from climate change, overfishing, and pollution, putting these precious ecosystems at risk. Conservation efforts are crucial in order to protect and preserve these important habitats for future generations.