Australia and New Zealand have widespread sheep ranching and are leading producers of wool. Australia is a leading global supplier of bauxite, opals, and diamonds. Geothermal energy and hydroelectricity are prevalent in New Zealand. Fifty-five percent of New Zealand's land is used for agricultural products such as beef, dairy, fruits, and vegetables. Larger Pacific Islands produce coffee, sugarcane, and tropical fruits. Residents of smaller Pacific Islands often practice subsistence farming. Australia, New Zealand, and the Pacific Islands all have major tourist industries.