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, staghorn coral, and fan coral. The colors of the coral range from bright green to deep purple, and they are arranged in a way that creates a natural and vibrant underwater landscape. The water in the aquarium is clear, and the lighting is bright, highlighting the intricate details of the coral and the surrounding environment. There are no fish or other marine animals visible in the video, and the focus is solely on the coral reef and its beauty.