The video shows a large fish swimming in a coral reef. The fish has a grey body and a white underbelly. It is swimming in and out of the coral, which is covered in various types of algae and coral. The water is clear, and the sunlight is shining through, illuminating the fish and the coral. The fish appears to be alone, and there are no other fish or creatures visible in the video. The coral reef is a vibrant mix of green, pink, and purple colors, and the fish moves smoothly through the water, exploring its surroundings.