The two main branches of Islam, Shia Islam and Sunni Islam, coexisted in Manama for centuries and are represented by distinct ethnic groups. The Shia community is represented by the native Arab Baharna, the Hasawis and Qatifis of mainland Arabia and the Persian Ajam. The Sunni community is represented by Arab Bedouin tribes who migrated in the eighteenth century along with the Bani Utbah and the Huwala, Arabic-speaking Persians. There is also a sizable native Bahraini Christian population in the country, numbering more than a thousand, in addition to immigrant Hindus and a small native Jewish community numbering 37.