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The population of Sanaroa is less than 2000.
Sanaroa has one primary school run by the Catholic Church. Students come from all over Sanaroa, some walking or canoeing 5 km to school. Many of the students have rarely or never left the island, and have little exposure to urban life.
The island's two main religions are the United Church and Catholic Church. In 2007 a Christian Mission Fellowship church was established.
Sanaroa's three council areas are Etana, Siawawa and Udaudana.
Sanaroa is surrounded by a small number of smaller uninhabited islands. They are gradually being eroded by sea waves and current in and out of the bay.
Sanaroa has a language that has faded or disappeared. The local people call it the K language because the 'k' sound was used frequently.
The local people live a subsistence-farming life style. The people use canoes, dinghies and other sea-going vessels as transport. There are no trucks, cars, mains power or airports on the island.
Sanaroa island is experiencing erosion due to wave action, and some smaller islands appear to be sinking slowly.
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