Kino is the husband of Juana and father to Coyotito. He lives in the village instead of the town and they are poor. At first the only valuable he had was a canoe from his father but he later finds a pearl. He swears to use the pearl for is family.
Juana is the wife of Kino and mother of Coyotito. She prays for something to happen for the family. When her son is hurt she uses seaweed at best. Juana is skeptical of the things the pearl will bring.
Coyotito is Juana and Kino son. One day while laying in a hammock he was stung by a scorpion. His parents wanted him to see a doctor but they knew that was a long shot. The sting started healing somewhat thanks to his mom.
At first the priest had never even heard of Kino and his family and assumed they were already married. When he hears of Kino's inheritance of the pearl he goes for a visit. However the priest just wants part of the family's money as a donation to the church.
The doctor that Kino's family knows will not come visit them because of their race and wealth lies to them. Once he finds out about the pearl the tables turn and he is suddenly interested in helping their son. To find out he just wants money and to steal the pearl.
Before the pearl the family was content with most things. Wasn't until Coyotitio was stung the the family was in desperate need of a pearl. Even though it brought the family opportunity it also brought jealousy and greed.