The Bissagos Islands, also spelled Bijagós, are a group of about 88 islands and islets located in the Atlantic Ocean off the coast of Guinea-Bissau. The archipelago was formed from the ancient delta of the Geba and Grande de Buba rivers and spans an area of 12,958 km2 (5,003 sq mi). 20 of its islands are populated year-round, including the most populated island, Bubaque. The administrative capital, Bolama is situated on the island of Bolama.