Physics, chemistry, biology, etc. Captain Nemo is a knowledgeable scientist and adventurer. At the bottom of 20,000 miles, he has a strong interest and research on natural science. His collection of books mainly includes books and manuscripts in physics, chemistry, biology, medicine and other natural sciences, with thousands of books, including many important scientific documents and manuscripts. Captain Nemo is a mysterious adventurer and scientist. He is the hero of the science fiction novel Two Wan Li under the Sea written by French novelist jules verne.