The video shows a large fish swimming in the ocean. The fish is mostly submerged, with only its back and dorsal fin visible above the water's surface. The water is a deep blue color, and the fish's skin appears to be a darker shade of blue. The fish is moving slowly and gracefully, with its fins gently propelling it through the water. There are no other visible creatures or objects in the water, and the fish is the sole focus of the video.