Mayotte (French: Mayotte; Shimaore (Swahili dialect): Maore; Malagasy: Mahori), officially the Departmental Collectivity of Mayotte (French: Collectivité départementale de Mayotte), is an overseas collectivity of France consisting of a main island, Grande-Terre (or Mahoré), a smaller island, Petite-Terre (or Pamanzi), and several islets around these two.
Mayotte is very densely populated. It is in the northern Mozambique Channel in the Indian Ocean, between northern Madagascar and northern Mozambique. The territory is geographically part of the Comoro Islands, but has been politically separate since the 1970s. The territory is also known as Mahoré, the native name of its main island, especially by advocates of its inclusion in the Union of Comoros.
The main island, Grande-Terre (or Mahoré), geologically the oldest of the Comoros, is 39 kilometres (24 mi) long and 22 kilometres (13½ mi) wide, and its highest point is Mount Benara (French: Mont Bénara; Shimaore: Mlima Bénara) at 660 metres (2,165 ft) above sea level. Because of the volcanic rock, the soil is relatively rich in some areas. A coral reef encircling much of the island ensures protection for ships and a habitat for fish.