evidence: Europa Island (French: Île Europa, pronounced [il øʁɔpa]), in Malagasy Nosy Ampela[1] is a 28-square-kilometre (11 sq mi) 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 of Rosier moved to it. The island officially became a possession of France in 1897, though it is claimed by Madagascar. [...] Europa is 6 kilometres (3.7 mi) in diameter, with a maximum altitude of 6 metres (20 ft), and has 22.2 kilometres (13.8 mi) of coastline. It is surrounded by coral beaches and a fringing reef and encloses a mangrove lagoon of around 9 square kilometres (3.5 sq mi) and open to the sea on one side. [...] Europa Island's climate is affected by the Agulhas Current with water temperatures usually above 30 °C (86 °F), southeast trade winds during the (austral) winter and occasional cyclones. The climate can be described as a semi-arid and tropical combination with wet summers and dry winters.