Poros 's a small Greek island-pair in the southern part of the Saronic Gulf, at a distance about 58 km (31 nautical miles) south from Piraeus and separated from the Peloponnese by a 200-metre wide sea channel. Its surface's about 31 square kilometres (12 square miles) and it's 4,117 inhabitants. The town of Poros has 4,102 of these inhabitants. The only other inhabited settlement's Ágios Nektários (pop. 15). The ancient name of Poros was Pogon. Poros consists of two islands: Sphairia… (More on Poros)