The video shows a manta ray swimming in the ocean. The ray is dark in color with a light blue glowing underbelly. It has a long tail and two large fins on either side of its body. The ray is seen gliding through the water, moving its fins in a slow, graceful motion. The ocean water is a deep blue color, and there are no other visible creatures or objects in the video. The ray appears to be alone, and there is no interaction with any other marine life.