Description
The Tuamotu Archipelago or the Tuamotu Islands (French: Îles Tuamotu, officially Archipel des Tuamotu) are a French Polynesian chain of just under 80 islands and atolls in the southern Pacific Ocean. They constitute the largest chain of atolls in the world, extending (from northwest to southeast) over an area roughly the size of Western Europe. Their combined land area is 850 square kilometres (328 square miles). This archipelago’s major islands are Rangiroa, Anaa, Fakarava, Hao and Makemo.
U.S.A. 
Vanuatu