The video shows a large fish swimming in the ocean. The fish is dark in color and has a long, thin tail. It is swimming near the surface of the water, which is a light blue color. The fish appears to be alone in the water, and there are no other fish or objects visible in the video. The fish is moving slowly and gracefully, with its fins and tail moving in a coordinated manner. The water is relatively calm, with only small waves visible around the fish. There is no visible title, subtitle, or other text in the video.