That movie, 20,000 Leagues Under the Sea, was based on a book. It was written in the 1800's - years before the first sub was invented. The man who thought this story up was . was an amazing writer who predicted the science future of the world. Some of the inventions he imagined were created later in his lifetime, but some are still to be invented. He was popular with all kinds of readers: rich, poor, young, old, scientists, artists and rulers. He wrote over 80 books mostly before 1900 and a few of the things he described were helicopters, mo ....