The video shows a close-up of a finger pointing at a coral reef in an aquarium. The coral reef is colorful and has many different types of coral, including brain coral, staghorn coral, and fan coral. There are also several fish swimming around the coral, including a yellow tang, a clownfish, and a blue tang. The water in the aquarium is clear and well-lit, allowing for a good view of the coral and fish. The finger moves slowly, pointing at different parts of the reef, giving a detailed look at the various corals and fish.