ALBAWABA - Known as "Sea devil," Satellites captured the first-ever images of the secret unmanned submarine of the US Navy. According to Newsweek magazine, the Sea devil submarine docked at the Port Hueneme Naval Base in California. The submarine was developed by American company Northrop Grumman. The Manta Ray was seen for the first time after a recent satellite photo surfaced online, showing the machine produced for the American military ...