The video shows a manta ray swimming in the ocean. The ray is large and has a long tail. It is accompanied by several small fish that are swimming around it. The water is clear and blue, and the ray is moving slowly through the water. The ray's body is mostly grey with some white spots, and it has a wide, flat body with a long tail. The small fish are dark in color and are swimming in a group around the ray. The ray appears to be calm and undisturbed by the presence of the fish.