The video shows a large fish swimming in the ocean near a coral reef. The fish is black and yellow in color and has a long tail. The coral reef is made up of small, round corals in shades of brown and beige. The water is clear and blue, and there are small fish swimming around in the background. The large fish swims slowly and gracefully through the water, occasionally turning its body and fins. The coral reef appears to be healthy and thriving, with no visible signs of damage or disease. The video captures the beauty and tranquility of the underwater world, showcasing the diversity and complexity of marine life.