The video shows a vibrant underwater scene with a yellow fish swimming around a coral reef. The fish is bright yellow in color and has a sleek, streamlined body. The coral reef is a mix of different colors, including purple, green, and orange, and is teeming with life. There are several other fish swimming around the reef, but the yellow fish is the most prominent. The water is clear, and the lighting is bright, highlighting the colors of the fish and the coral.