The video shows a large manta ray swimming in the ocean. The manta ray is dark gray in color and has a long, flat body with a wide, triangular pectoral fin. It is surrounded by a group of small yellow and black fish that are swimming around it. The water is a deep blue color, and the lighting is natural, suggesting that the video was taken during the day. The manta ray moves slowly and gracefully through the water, occasionally flapping its pectoral fin. The small fish seem to be swimming in a coordinated group, possibly for protection or to feed on plankton. There are no other visible marine animals or objects in the video.