Salamis Island is the largest Greek island in the Saronic Gulf, about two kilometres from the coast of Athens' port of Piraeus and about 16 km (8+1⁄2 nmi) west of Athens center. Its population was 37,220 in 2021. The chief city, Salamina, lies in the west-facing core of the crescent on Salamis Bay, which opens into the Saronic Gulf.
Hydra, or Ydra or Idra and in antiquity Hydrea, is one of the Saronic Islands of Greece, located in the Aegean Sea between the Myrtoan Sea and the Argolic Gulf. It is separated from the Peloponnese by a narrow strip of water. In ancient times, the island was known as Hydrea, a reference to the natural springs on the island. Its population was 2,070 in 2021.
The Saronic Islands or Argo-Saronic Islands is an archipelago in Greece, named after the Saronic Gulf in which they are located, just off the Greek mainland. The main inhabited islands of this group are Salamis, Aegina, Agistri, and Poros. The islands of Hydra and Dokos, which lie off the northeast tip of the Peloponnese are sometimes included as part of the Saronic Islands.
