Tuvalu is the Oceanian country with the lowest maximum elevation: its highest point is only about 4.6 metres above sea level, on the island of Niulakita.
Tuvalu is a low-lying Pacific nation made up of nine islands: three reef islands and six true atolls. These islands formed from coral material around volcanic foundations, leaving narrow strips of land with little height above the surrounding ocean. The country’s total land area is only about 26 square kilometres.
Tuvalu is often confused with the Maldives, which has an even lower maximum elevation worldwide. However, the Maldives is generally classified geographically in Asia, not Oceania. Within the sovereign countries of Oceania, Tuvalu is the canonical answer. The Marshall Islands and Kiribati are also exceptionally low-lying, but their highest points are higher than Tuvalu’s.
This extreme geography makes Tuvalu especially vulnerable to storm surges, king tides, saltwater intrusion and rising sea levels. Its highest places are often narrow storm ridges rather than substantial mountains.