The video shows a close-up of a fish tank with a variety of colorful corals and fish. The corals are in shades of purple, green, and yellow, and the fish are swimming around them. The tank is well-lit, and the water is clear. The corals are of different shapes and sizes, some resembling brain corals and others resembling branching corals. The fish are small and appear to be tropical in nature. The video pans across the tank, giving a good view of the different elements within.