Sherbro Island is in the Atlantic Ocean, and is included within Bonthe District, Southern Province, Sierra Leone. The island is separated from the African mainland by the Sherbro River in the north and Sherbro Strait in the east. It is long and up to wide, covering an area of approximately . The western extremity is Cape St. Ann. Bonthe, on the eastern end, is the chief port and commercial centre. Historically, this was part of the territory of the historic Sherbro people, who dominated a large area of what is now Sierra Leone. Today they are concentrated in the southern and central part of Moyamba District. They make up by far the largest ethnic group in the island, where the total population is 28,457. The island has more than of tropical beaches. It has been earmarked by the Ministry for Tourism and Development of Sierra Leone for tourism development. Economic activities Swamp-rice cultivation, tourism, and fishing are the main economic activities. History Sherbro Island was long inhabited by the Sherbro people, who historically dominated other ethnicities in much of the region on the mainland. The islanders had an economy based on extensive fishing. They also traded by boat with neighboring people in villages along the coast. In the seventeenth century Portuguese, Spanish, and Dutch explorers and traders came to this area. They traded with the Sherbro and with other tribes up the rivers to the interior. They referred to what is now known as the Sherbro River as the Madrebombo River, which may have referred to "mother drum" in Spanish. Dutch letters dated 1633 refer to the river in a spelling variation as Maderebombo. Other spelling versions included Madrabomba. (See: Navigantium Atque Itinerantium Bibliotheca) In the seventeenth century, the Royal African Company, chartered as a monopoly in England, began to operate here and on the Guinea Coast as traders. While originally seeking gold, particularly along the Gambia River, by the early eighteenth century the RAC became involved in slave trading, which its monopoly covered. The RAC established a Company fort known as York Island at Sherbro Island. It was a port for exporting enslaved Africans to the Americas. Thomas Corker, who was from Falmouth, Cornwall, had been working with the RAC for more than a decade when he was appointed agent here in the late seventeenth century. He married the daughter of a Sherbro chief, and their two sons became