"At the Four Seasons Resort Maldives at Landaa Giraavaru, the nonprofit Reefscapers has planted more than half a million new corals. The resort features one of the world’s largest underwater nurseries that use mineral accretion technology, or MAT, to encourage coral growth. Guests can participate in these reef restoration projects." - Betsy Andrews Betsy Andrews Betsy Andrews is an award-winning journalist with over two decades of experience writing about food, drink, and travel. She contributes to Travel + Leisure, Condé Nast Traveler, The Wall St