The video shows a large whale swimming in the ocean. The whale is mostly blue in color, with a long tail that it uses to propel itself through the water. The whale's body is covered in bumps and ridges, and it has a small dorsal fin on its back. The ocean water is a deep blue color, and there are small bubbles visible around the whale. The whale moves slowly and gracefully through the water, with its tail fin creating a trail behind it.