Twenty Thousand Miles Under the Sea was a science fiction novel by Bohr of France. The following is a summary of the main plot of the novel's characters: Aronnax: As a scientist, he loves science and is eager to explore the unknown. In order to complete his research, he went 20,000 miles deep into the sea to communicate and study with marine creatures. 2 Moffitt: Aronnax's colleague and friend is also a scientist. He loved science and was very smart, but he also had his own principles and values. 3. Nautilus Captain, Nemo: Nemo was an adventurous person who pursued the exploration of the unknown and had a deep love for science. He had led Aronnax and Moffet to explore 20,000 kilometers of the ocean floor, which had greatly helped their scientific research. Sea monster: Sea monster is a mysterious creature that lives in the depths of the sea and has great strength and wisdom. Aronnax and Nemo encountered a sea monster during their exploration, and they tried to defeat it but failed. 5. Other crew members: Other than Aronnax, Nemo, and Moffet, the other crew members also have their own characteristics and roles, such as the female biologist Betty, the divers Max, and the sea monsters 'natural enemy Starfish. Under the leadership of Aronnax, they explored 20,000 miles of the ocean floor and contributed to scientific research.