Aquania is an Earth-sized ocean planet that serves as the homeworld of the Aquanian Republic the Aqeemians, and the Aqeniae within the Aquania system of the Duyi'zu Universe. Its capitali city is located within the floating fortress of Poseidome. It also has good relations with the United Federation of Planets and the Ferengi Alliance, thanks to their three-world alliance that has continued its existence since the start. About 95% of its colonist population are descendents of the ethnic natives of the nation-states of Ireland and Italy. It shares the same solar system as its twin planet, Ordosium Prime.