Bora Bora, French Polynesia

Bora Bora's Mount Otemanu rises 727 meters above a 40 sq km lagoon, offering the clearest waters in the South Pacific with visibility exceeding 30 meters. The lagoon houses 500 marine species, a density 50% higher than the average coral reef, outperforming #1 in reef encounters and biodiversity. However, overwater bungalow prices start at $800 per night, 40% more expensive than Santorini's average accommodation, though 85% of visitors rate the experience as worth it, citing private pools and direct lagoon access as key differentiators from the Maldives.