often referred to as a narwhal, as he embarks on an expedition aboard the frigate Abraham Lincoln alongside his companion, Ned Land. The opening of the novel sets the stage for a thrilling adventure, revealing that in 1866, a strange, enormous object has been encountering ships and launching jets of water into the air, leading to widespread speculation about its existence. As various international governments and the scientific community engage in heated debates about the creature, Professor Aronnax, recently returned from a scientific expedition, expresses an urgent curiosity about this mystery. Upon receiving an invitation to join the expedition aboard the Abraham Lincoln, he accepts, eager to explore the depths of the ocean and uncover the truth behind the so-called "monster." The tension mounts as the crew prepares for a confrontation with the unknown while the possibility of danger looms large. (This is an automatically generated summary.)