Pacific Islander AmericansPacific Islander Americans are immigrants or descendants of people from the Pacific Islands region of the Pacific Ocean. The Pacific Islands, which lie east of the Philippines and north and east of Australia, consist of 25,000 islands, crescent-shaped atolls, coral reefs, and tiny islets in about 11 million square miles (28.5 million square kilometers) of ocean. The entire region is called Oceania and includes Australia and the large island nation of New Zealand. Six to ten thousand of the islands are inhabited, and there are twenty-two countries and territories in the region, each consisting of one or more clusters of islands or archipelagos. The countries of the Pacific Islands are divided into three cultural/geographic subregions: Melanesia, the area geographically closest to Australia; Micronesia, which is north of Melanesia and east of the Philippines; and Polynesia, a triangle that lies to the east of these. Most of the islands in the region are between 4 and 4,000 square miles in land surface area. The entire region's area of 11 million square miles is twenty times the size of Alaska.