Is this a good comparison summary please help if not? The main difference between the movie and the book is that Nautilus, the submarine is a battery-powered submarine but in the Disney film, Captain Nemo harnesses nuclear power for his submarine. Which created a dramatic interest in the move for Professor Arannax in discovering the secrets of Nemos, technology, but in the book he spends his time recording species and writing them down in his journals. The last character with a difference is Ned Land who in the book is spending time brooding and pinning for a silent escape. He also is a very powerful man. However, in the movie, it shows that he is a violent and outspoken man. This made all these characters play a unique and important role as they play their part in the book.