Fiji offers two of the most beautiful reefs: the Great Astrolabe Reef, which is the world’s fourth-largest barrier reef, curling around the southern island of Kadavu; and the Great Sea Reef- a coral reef off the northern island of Vanua Levu. Both of the reefs have wonderful snorkeling opportunities, where you’ll have the opportunity to view an abundance of wildlife; including eagle and manta rays, green turtles, and spinner dolphins.