Yasawa is as authentic as it gets in Fiji. Great for snorkelling and diving enthusiasts, these islands are also excellent for travellers wishing for their first up, close and personal encounters with friendly dolphins and majestic manta rays. The limestone caves of Sava-i-Lau are an exceptional day-tour. Visitors will have to swim down a tunnel before breaching a magnificent limestone grotto with streamers of sunlight filtering in. Definitely a bucket-list experience.