When they get back Kino launches the pearl back into the sea where it belongs in front of all the other villagers.
Certainly the main character in the novel is Kino, whose whole personality changes during the course of the book. At the start he is a settled, loving husband but as the story progresses he starts to change, his mind is corrupted by the thought of money and wealth and he physically abuses Juana, which he would never usually do. However as the end of the novel approaches he starts to realise how stupid he has been and how it has cost Coyotito's life. This change in attitude and ideas throughout the story makes him a very interesting character and his brave, strong, warrior like personality also adds to the excitement of the novel.
Juana is a very wise character, she is very quick to realise the threat of the pearl to the family and tries her best to get rid of it. When Juana and Kino walk back towards the village they walk side by side instead of their usual formation of Kino in front and Juana following. This is perhaps a sign that Kino is humbled by Juana. .
The doctor adds a sense of evil to the novel; his selfish and nasty attitude towards the native villagers gives the novel a bit more depth and emotion. This emotion is shown through "the song of evil" and "the song of the family", these songs are present in Kino's mind at different points in the book, giving the reader a good understanding of what Kino's attitude is. These songs also give a very traditional feel to the storyline.
The story is written in a strange way, there are many sentences beginning with the word "and", which is not common practice, the story line is very simple but effective. All of these factors link to a folktale, a story that has been passed down through generations and has to be easy to remember. The novel is circular in the way that they end up back at the village where they came from and the pearl ends up back in the sea where it belongs.