The video shows a group of fish swimming in the ocean. The fish are of different sizes and colors, and they are swimming around a coral reef. The coral reef is covered in various types of coral and marine plants. The water is clear, and the sunlight is shining through, creating a beautiful underwater scene. The fish are moving gracefully, and their fins and tails are visible as they swim. The coral reef is a vibrant mix of colors, with some corals appearing to be purple, green, and yellow. The marine plants sway gently with the current, and the fish seem to be interacting with each other as they swim around the reef.