As the expedition intensifies, the protagonist encounters tangible evidence of creatures that defy conventional explanation along the boundary between sea and land. Repeated observation and pursuit transform rumor into disturbing reality, exposing the limits of scientific classification. Fear and wonder coexist as rational analysis clashes with instinctive response among the explorers. The narrator comes to realize how fragile the belief in humanity’s complete mastery of nature truly is. Rather than offering definitive answers, the conclusion affirms the enduring presence of the unknown and calls for humility before the mysteries of the natural world.
