Footage from deep in the Pacific Ocean has given the first detailed look at three World War II aircraft carriers that sank in the pivotal Battle of Midway and could help solve mysteries about the days-long barrage that marked a shift in control of the Pacific theater from Japanese to US forces.

Remote submersibles operating 3 miles (4.8 kilometers) below the surface conducted extensive archeological surveys in September of the Akagi and the Kaga, two of the four Imperial Japanese Navy aircraft carriers destroyed during the June 1942 battle, as well as the USS Yorktown.