The video shows a close-up of a coral reef in an aquarium. The reef is made up of various types of coral, including brain coral, staghorn coral, and sea anemones. The colors of the coral range from purple, pink, and orange to green and blue. The reef is surrounded by rocks and other marine life, creating a vibrant and diverse ecosystem. The camera pans slowly across the reef, allowing viewers to see the intricate details of the coral and the surrounding environment.