The video shows a large group of fish swimming in the ocean. The fish are of different sizes and colors, with some being yellow and others being blue. They are swimming around a coral reef, which is visible in the background. The water is clear and blue, and the sun is shining through, creating a beautiful underwater scene. The fish are moving gracefully, and their fins and tails can be seen moving in the water. The coral reef is covered in various types of coral, including some that are purple and others that are green. The video captures the beauty and diversity of marine life in the ocean.