Which country occupies the islands called Euboea, Kefalonia, Khos, Zakynthos, Thassos, Lefkada, Karpathos and Kythira?
Potamon fluviatile northeastern Greece. In mainland Greece, "P. fluviatile" is found in the drainages of the Axios, Thyamis, Aheron and Arachthos, Pineiós, Piros-Tethreas, Pamisos and Evrotas rivers. In the Ionian Islands, "P. fluviatile" is known to occur at only one site on Corfu, as well as on Kefalonia, Lefkada and Zakynthos. In the Aegean Islands, it is found on Skiathos and Skopelos (Sporades), on Euboea and Skyros, and at a single site on Andros in the Cyclades. "Potamon fluviatile" is at the western distributional limit of the genus "Potamon". Other species in the genus occur through Eastern Europe and the Middle East,
Zakynthos all buildings have been fortified to protect against further tremors. On 26 October 2018, a 6.4-magnitude earthquake south of the island caused no injuries but damaged the local pier and a 13th Century monastery. Zakynthos lies in the eastern part of the Ionian sea, around west of the Greek (Peloponnese) mainland. The island of Kefalonia lies on the north. It is the southernmost of the main group of the Ionian islands (not counting distant Kythira). Zakynthos is about long and wide, and covers an area of . Its coastline is approximately long. According to the 2011 census, the island has