Aegean Islands, Greek islands in the Aegean Sea, particularly the Cyclades, Sporades, and Dodecanese groups. The Cyclades consist of about 30 islands. The Dodecanese, or Southern Sporades, include Kálimnos, Kárpathos, Cos, Léros, Pátmos, Rhodes, and Sími. The Sporades, or Northern Sporades, include Skyros, Skópelos, and Skíathos.