The video shows a large aquarium with a variety of colorful corals and fish. The corals come in different shapes and sizes, including branching, dome-shaped, and plate-shaped. The fish are swimming around the corals, and some are hiding among them. The aquarium is well-lit, highlighting the vibrant colors of the corals and fish. The water is clear, and the tank is clean. The person filming the video is moving their hand in front of the tank, possibly to show the size of the tank or to draw attention to the fish.