Well before the Borgo di Mare on the Bay of Cartaromana there was another settlement which was completely unknown until just a few years ago. We are talking about Aenaria, an urban aggregate from the Roman age which, today, due to the complex geological events of the island, lies below sea level at a depth of six metres. In 2011, an underwater archaeological research project began, revealing, year after year, the Roman era ruins of Aenaria and in particular its port and the walls of a seaside villa.
The archaeological site can be visited via a glassbottomed boat; the excursion is introduced by the projection of a video that tells the story of the discovery and the underwater archaeological excavation methods and technologies. From the glass of the boat, you can also enjoy other natural features of the seabed of the Bay, including extensive posidonia oceanica and the gaseous emissions, now at the Centre of International Studies to analyse the phenomenon of ocean acidication.