Kai Islanders are skillful at wood carving and basketry and are first-class boatbuilders. Plantains, yams, corn (maize), rice, and tobacco are grown. Two communities, Banda Elat on the western coast of Kai Besar and Banda Eli on the eastern coast, represent the original inhabitants of the Banda Islands driven away from their home islands by the Dutch in the early 17th century. The principal trade is in copra, timber, trepang, and tortoiseshell. Tual, on the western coast of Kai Kecil, is the administrative centre and main port.