The video features a close-up view of a coral reef in an aquarium. The corals are of various colors, including purple, pink, and yellow. The camera pans around the reef, showing the intricate details of the corals' structures. The corals are of different shapes and sizes, some resembling branches while others are more rounded. The water in the aquarium is clear, allowing for a good view of the corals. There are no fish or other marine animals visible in the video.