AdventureLuxuryNatureWellness 23 of the Most Beautiful Beaches in the World Advertisements 14. Blue Lagoon, Nacula, Fiji www.fijiislands.com.au The Blue Lagoon is a resort area on Fiji’s Nacula Island. The island’s beaches and lagoons are all crystal clear water, white sands and idyllic locations for relaxing on holiday and enjoying a spot of snorkeling or diving while you’re there. Advertisements