The Mary Celeste
The Mary Celeste was an American ship found near the Azores Islands off the coast of Portugal. She had left New York for Genoa but never arrived. When they finally found and boarded the ship, they found it was entirely empty with everything intact except a life boat. The last log date was ten days prior. None of the crew or passengers were ever seen again. Many theories exist on what happened to the people on board including seaquakes, waterspouts, alcohol fumes, and giant squids. Nothing has been proven, and the mystery lives on today.