Micronesia is one of the three major divisions (with Melanesia and Polynesia) of the Pacific Islands, encompassing more than 2000 islands in the Pacific Ocean east of the Philippines, and for the most part north of the equator. Micronesia includes the Commonwealth of the Northern Marianas, Guam, the Republic of Palau, the Marshall Islands, Kiribati, Nauru, and the Federated States of Micronesia. The islands have a total land area of about 3240 sq km (about 1251 sq mi). Micronesia (Greek for "small islands") consists mostly of atolls and small coral islands. Of the few volcanic islands, Guam is the largest, followed by Babelthuap in the Republic of Palau.