This video showcases a large submarine moving through the ocean. The submarine is grey in color and has a conning tower with several antennas on top. The ocean is a deep blue color and the sky is partly cloudy. The submarine is moving at a steady pace, leaving a trail of white foam in its wake. The video is shot from different angles, including a top-down view and a side view. The submarine appears to be in good condition and is likely used for military purposes.