Ischia, Capri, Procida and Vivara: these are the partenopean island in the bay of Naples. To the north of the gulf are situated Ischia, Procida and Vivara, looking toward the "Flegrea"coast (and "Flegree" is their name), while in the sotuh of the gulf, opposite to the Sorrento peninsula, lays Capri.

The "flegree" islands are different from Capri both for their position and for their different geological origins.

Ischia is the largest island with her 47 square kilometers, followed by Capri with an extension little more then 10 square kilometers and Procida which is about 3 square kilometers. Procida is linked to the small island of Vivara which is a wonderful natural reserve.