Greek sea gods conform to a single type: that of Homer's "halios geron" or Old Man of the Sea: Nereus, Proteus, Glaucus and Phorkys. These sea gods are not as powerful as Poseidon, the main god of the oceans and seas. Each one is a shape-shifter, a prophet, and the father of either radiantly beautiful nymphs or hideous monsters (or both, in the case of Phorkys). Nymphs and monsters blur, for Hesiod relates that Phorcys was wed to the "beautiful-cheeked" Ceto, whose name is merely the feminine of the monstrous Cetus, to whom Andromeda was due to be sacrificed. Each appearance in myth
Periplus of the Erythraean Sea never went this far south. This account of a kingdom tracing its beginnings to Alexander's campaigns and the Hellenistic Seleucid empire that followed: The "Periplus" further claims to the circulation of Indo-Greek coinage in the region: The Greek city of Alexandria Bucephalous on the Jhelum River is mentioned in the "Periplus", as well as in the Roman Peutinger Table: Periplus of the Erythraean Sea The Periplus of the Erythraean Sea or Periplus of the Red Sea (, ) is a Greco-Roman periplus written in Koine Greek that describes navigation and trading opportunities from Roman Egyptian ports like Berenice Troglodytica along