The Comoros, officially the Union of the Comoros, is an island country in the Indian Ocean, at the northern end of the Mozambique Channel off the eastern coast of Africa. It shares maritime borders with Madagascar and Mayotte to the southeast, Tanzania to the northwest, Mozambique to the west, and the Seychelles to the northeast. Its capital and largest city is Moroni. The religion of the majority of the population, and the official state religion, is Sunni Islam.