The Menai Bay Conservation Area (MBCA) is located in Menai Bay, Zanzibar Tanzania. At 470 square kilometres (180 sq mi), it is Zanzibar's largest marine protected area. It was officially established as a conservation area in August 1997 in the traditional fishing area, known as Unguja Island, covering the tropical marine environment comprising extensive coral reefs, tropical fish, sea grasses, and mangrove forests. In addition to controlling illegal fishing, MBCA's alternative initiatives have included bee keeping, mangrove replanting, tree nurseries and tourism. The management of the MBCA falls upon the Fisheries Department and the bay's local villages. It is rated by the IUCN as Category VI Managed Resource Protected Area.