The video shows a vibrant underwater coral reef with a variety of fish swimming around. The reef is teeming with life, with different types of coral and fish visible in the footage. The water is clear, allowing for a detailed view of the reef and its inhabitants. The fish are seen swimming in different directions, some darting in and out of the coral, while others glide smoothly through the water. The colors of the fish and coral are bright and varied, adding to the overall beauty of the scene.