Cayo de Agua, Venezuela: Cayo de Agua (Water Key) is the name of an island in the eastern Caribbean Sea that geographically belongs to the Los Roques Archipelago and is administratively organized as part of the Federal Dependencies, Venezuela, in addition to being part of the National Park of the same name and the Miranda Island Territory, the name of this key has its origin in the fact that it has freshwater wells within it. Wikipedia















