Description is a literary technique very commonly used in literature. The purposes that an author may have for using descriptive details in his or her narrative are extremely varied, but certainly one can ascertain that a description is an excellent medium to convey the intricacies of a character´s personality, motives and actions; also to imply or announce covertly, perhaps to accentuate a suspenseful tone, certain upcoming events in the narrative; and finally, it can also be used to help the reader form mental images of the narrative so as to engage him or her and make the reading more pleasant, interesting, or intriguing.
The story narrates the creation of the world from water. One of the characters in the story, Water-beetle, dives into the water and brings up some mud. The small amount of mud expands to become Earth. These elements suggest that it is an earth diver story.