Group of islands, central Philippines. Covering some 23,550 sq mi (61,000 sq km), they are surrounded by the Visayan, Samar, and Camotes seas. The main islands are Bohol, Cebu, Leyte, Masbate, Negros, Panay, and Samar. These islands and their smaller neighbours make up the central group of the Philippine archipelago. Agriculture and fishing are important. The major urban centres are Cebu City on Cebu and Iloilo City on Panay.