Equatorial GuineaEquatorial Guineais the only sovereign African state in which Spanish is an official language. As of 2015, the country has an estimated population of over 1.2 million.Malabois the capital of Equatorial Guinea and the province of Bioko Norte. It is located on the north coast of the island of Bioko.Batais a port city in the Litoral Province of Equatorial Guinea. With a 2005 estimated population of 173,046, it is the largest city in Equatorial Guinea.Pico Basilé(formerly Pico de Santa Isabel), located on the island of Bioko, is the tallest mountain of Equatorial Guinea. With an altitude of 9,878 ft (3,011 m), it is the summit of the largest and highest of three overlapping basaltic shield volcanoes which form the island.The Benitois a river in Equatorial Guinea. It is known locally as the Mbini River. It divides the country roughly along the middle, running east to west. At the mouth to the Atlantic Ocean lies the town ofMbini,as well as large mangrove stands that extend 20 km inland.Mangrovesare shrubs or small trees that grow in coastal saline or brackish water.