The video is a black and white footage of a submarine moving through the ocean. The submarine is seen from an aerial view, and it is moving at a steady pace. The water around the submarine is choppy, indicating that the submarine is moving through rough waters. The submarine appears to be a military vessel, given its design and the way it is moving. There are no visible markings or flags to identify the country of origin. The video does not show any other vessels or objects in the vicinity of the submarine.