The video shows a beautiful underwater scene with a coral reef. There are several fish swimming around the reef, and a person is seen swimming above them. The water is clear, and the fish are of different sizes and colors. The coral reef is vibrant and full of life, with various types of coral and marine plants. The person swimming above the reef is wearing a snorkeling mask and appears to be observing the fish and the reef. The overall atmosphere of the video is peaceful and serene, with the sound of water gently lapping against the reef.