Twenty Thousand Miles Under the Sea differed from the movie in the following aspects: 1 Story content: " 20,000 Miles Under the Sea " is a science fiction novel written by Bohr of France. It mainly tells the story of Bohr using his scientific talent and submarines to explore the seabed and study marine life and the universe. The movie adapted the story into an adventure movie about the protagonist, Aaron Bartley, searching for treasure at the bottom of the sea. 2. Character Creation: Bohr in the novel is an explorer with scientific talent and adventurous spirit, while Bohr in the movie is more shaped into a heroic image. The characters in the movie are more three-dimensional and rich. 3. Visual effects: There are differences in visual effects between the novel and the movie. The submarine in the novel was a giant instrument invented by Bohr that allowed people to dive into the deep sea for research and exploration. The submarine in the movie was more modern, high-tech, and visually impactful.