Nauruan indigenous religion is a monotheistic system of belief that includes a female deity called Eijebong and an island of spirits called Buitani. Believers say that the sky and the earth were created by a spider called Areop-Enap. There are very few, if any, people on the island who still subscribe to this religion, because of the dominant belief of Christianity imposed upon them by Christian colonization.
References
Nauruan indigenous religion Wikipedia(Text) CC BY-SA