Off Cape Olmia lie four islets - Zoodochos Pigi, Daskalio, Glaronisi and Prasonisi- known collectively as the Alcyonides or the Kalanisa.

The remains of ancient permanent or semi-permanent settlements have come to light on the islets: Daskakio has yielded the sherds of Corinthian pottery and traces of a polygonal wall, while pre­Christian sherds and more traces of buildings have been discovered on Zoodochos Pigi