The Mamanuca Islands of Fiji are a volcanic archipelago lying to the west of Nadi and to the south of the Yasawa Islands. The group, a popular tourist destination, consists of about 20 islands, but about seven of these are covered by the Pacific Ocean at high tide.

Fiji, officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean. It lies about 1,100 nautical miles north-northeast of New Zealand. Fiji consists of an archipelago of more than 330 islands—of which about 110 are permanently inhabited—and more than 500 islets, amounting to a total land area of about 18,300 square kilometres (7,100 sq mi). The most outlying island group is Ono-i-Lau. About 87% of the total population of 924,610 live on the two major islands, Viti Levu and Vanua Levu. About three-quarters of Fijians live on Viti Levu's coasts, either in the capital city of Suva, or in smaller urban centres such as Nadi or Lautoka. The interior of Viti Levu is sparsely inhabited because of its terrain.