Natural Park of the Coral Sea
The Natural Park of the Coral Sea (French: Parc naturel de la mer de Corail), established in 2014, is a marine park wholly around New Caledonia, a special collectivity of France. As of 2017 it is the fourth largest protected area in the world, encompassing 1,292,967 square kilometres (499217 sq miles).
Source: Wikipedia — Natural Park of the Coral Sea (CC BY-SA 4.0)