The video shows a fish tank with a variety of colorful corals and fish. The corals are in different shapes and sizes, and the fish are swimming around them. The water is clear, and the lighting is dim, creating a calming effect. The fish are of various sizes and colors, including yellow, blue, and black. The corals are in shades of purple, green, and orange. There is a filter hanging from the top of the tank, and the sand at the bottom is white.