Ulithi (Yapese:Wulthiy, Yulthiy, or Wugöy) is an atoll in the Caroline Islands of the western Pacific Ocean, about 191 km (103 nautical mi) east of Yap. It consists of 40 islets totalling 4.5 km (1.7 sq mi), surrounding a lagoon about 36 km (22 mi) long and up to 24 km (15 mi) wide—at 548 km (212 sq mi) one of the largest in the world. It is administered by the state of Yap in the Federated States of Micronesia. Ulithi's population was 773 in 2000. There are four inhabited islands on Ulithi Atoll. They are Falalop (Ulithian:Fl'aalop), Asor (Yasor), Mogmog (Mwagmwog), and Fedarai (Fedraey). Falalop is the most accessible with an air strip, a small resort hotel, gas dealership, store and one of three public high schools in Yap state. Mogmog is the seat of the high chief of Ulithi Atoll though each island has its own chief. Other important islands are Losiap (Ulithian:L'oosiyep), Sorlen (Sohl'oay), and Potangeras (Potoangroas).