One of the earliest themes (military region, which became an administrative district as well) in the Byzantine Empire, created in the 7th century.
It was a maritime theme and covered the southern coastal regions of Asia Minor and the Aegean islands. By the end of the century (or earlier) southern Asia Minor and the Aegean islands were separately administered within the theme.
By 732 the southern mainland had become the Cibyraeot theme. The islands later became the theme of the Aegean Sea (Aigaion Pelagos), the southeastern islands forming a separate theme of Samos by the 10th century.