Al Khadra

Al Khadra, better known as Aldabra, is a vast raised coral atoll in the western Indian Ocean. Four principal islands enclose a shallow lagoon, whose waters flow through narrow channels with the tides. Giant tortoises browse the atoll's scrub, and green turtles come ashore to nest. The lagoon's mangroves and seagrass beds shelter fish in a landscape of limestone and coral.