Polynesia, Fakarava Marina

Tucked inside one of the largest atolls in French Polynesia, this marina puts you right at the heart of a UNESCO Biosphere Reserve where the marine life is genuinely extraordinary. The lagoon stretching out around you covers over 1,100 square kilometres, and the famous Garuae pass — one of the world's most fish-rich channels — is just a short trip away. It's the kind of place where the destination itself is the whole point, with sharks, rays, and technicolour reef life drawing divers and snorkellers from across the Pacific.