Europa Island is a 28-square-kilometre low-lying tropical atoll in the Mozambique Channel, about a third of the way from southern Madagascar to southern Mozambique. The island had never been inhabited until 1820, when the French family Rosier moved to it. The island officially became a possession of France in 1897.
The island, garrisoned by a detachment from Réunion, has a weather station and is visited by scientists. Though uninhabited, it is part of the "Scattered Islands" of the French Southern and Antarctic Lands administrative region.
Wikipedia https://en.wikipedia.org/wiki/Europa_Island
Coordinates -22°21'51.982" N 40°21'50.62" E