Click link below, there are some pictures.
Poseidon was depicted as a mature man of sturdy build with a dark beard, and holding a trident.
Poseidon's companion was a spirited hippokampos (it looked like a horse mermaid) named Akoya.
Poseidon's palace was believed to have looked like a vast under water castle with tall blue spires and huge stables for his horses. Poseidon drove a golden chariot that calmed the storms at sea.
Anything he pleased it to, or however a artist/writer rendered it.
Hades looked a lot like Zeus and Poseidon (his brothers). His features are rather gloomy, his hair usually falls past his eyes and he had a beard.
well as Greek mythology Poseidon was god of sea, horses, and earhquakes (sometimes). no one knows if it was true yes or no, but there is 99.9% that he was a merman
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What kind of music do poseidon like
Poseidon had 52 kids like most Gods on Mt.Olimpus
Poseidon ?
The goddess Athena
Neptune
One conflict Poseidon had to deal with was when he brought his girlfriend, Medusa to the temple of Athena. Athena was insulted by the act and turned Medusa's hair into snakes and every man that looked at her would turn into stone.