The video shows a large manta ray swimming in the ocean. The ray has a distinctive shape with a flat body and long, thin tails. It is dark in color, possibly black or dark gray, with some white spots on its body. The ray is accompanied by a smaller fish that is swimming close to it. The water is a deep blue color, indicating that the video was taken in the open ocean. There are also two divers in the video, wearing scuba gear and swimming near the ray. The divers appear to be observing the ray and the smaller fish. The video does not contain any visible text or subtitles.