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Gaiola Island is one of the minor islands of Naples, Italy; it is offshore of Posillipo and gives its name to the Underwater Park of Gaiola (Parco Sommerso di Gaiola), a protected marine area.

The island takes its name from the cavities that dot the coast of Posillipo (from the Latin cavea, "little cave", and then through the dialect "Caviola"). Originally, the small island was known as Euplea, protector of safe navigation, and was the site of a small temple. Sources

Procida is one of the Flegrean Islands off the coast of Naples in southern Italy. The island is between Cape Miseno and the island of Ischia. With its tiny satellite island of Vivara, it is a comune of the province of Naples, in the region of Campania. The population is about ten thousand.

Procida was held by Mycene in the period between the 16th and 15th centuries BC. During the 8th century BC the first Greek settlers to this island were immediately replaced by other Greek people coming from Cuma. Sources