The video shows a close-up view of a coral reef in an aquarium. The reef is made up of various types of coral, including brain coral and staghorn coral. The colors of the coral range from purple to green, and they are surrounded by rocks and other marine life. The camera moves slowly across the reef, allowing viewers to see the intricate details of the coral's structure and the vibrant colors. The lighting in the aquarium highlights the coral's natural beauty, creating a serene and mesmerizing underwater scene.