Bronzino Ritratto dell’ammiraglio Andrea Doria come Nettuno 1540
Giulio Romano Jupiter Seducing Olympias 1526

Poseidon or Posidon (Greek: Ποσειδῶν) is one of the twelve Olympian deities of the pantheon in Greek mythology. His main domain is the ocean, and he is called the “God of the Sea”. Additionally, he is referred to as “Earth-Shaker” due to his role in causing earthquakes, and has been called the “tamer of horses”.The name of the sea-god Nethuns in Etruscan was adopted in Latin for Neptune in Roman mythology; both were sea gods analogous to Poseidon. Linear B tablets show that Poseidon was venerated at Pylos and Thebes in pre-Olympian Bronze Age Greece, but he was integrated into the Olympian gods as the brother of Zeus and Hades. There is a Homeric hymn to Poseidon, who was the protector of many Hellenic cities, although he lost the contest for Athens to Athena.
Charles Lebrun The Wrath of Neptune 1670
Jan Gossaert Neptune and Amphitrite 1516
Giulio Romano Jupiter, Neptune And Pluto Drawing Lots For Their Kingdoms 1528

I begin to sing about Poseidon, the great god, mover of the earth and fruitless sea, god of the deep who is also lord of Helicon and wide Aegae. A two-fold office the gods allotted you, O Shaker of the Earth, to be a tamer of horses and a saviour of ships!
Hail, Poseidon, Holder of the Earth, dark-haired lord! O blessed one, be kindly in heart and help those who voyage in ships!

Anonymous. The Homeric Hymns
Leonardo Da Vinci Neptune 1504
Jacob de GheynII Neptune and Amphitrite c1560
Jacob Jordaens Neptune creating the Horse 1645.

And then I sighed, ” Oh harsh Poseidon,
Thy anger is fearful;
And I myself am afraid
Of my own home-coming.”

Scarcely had I spoken,
When the sea was churned into foam
And out of the whitening waters rose
The head of the sea-god,
Sea-weed crowned,

And scornfully he called :
” Have no fear, little poet !
I haven’t the least intention to harm
Your poor little boat,
Nor frighten your precious little soul
With a lusty, long-to-be-remembered rocking.
For you, bardlet, have never vexed me.
You have never, that I know of, shaken the
smallest turret Of Priam’s holy city.
Nor have you singed a single hair
From the eyelash of my son, Polyphemus;
And, surely, never have you been befriended or
counseled By Pallas Athene, the goddess of Wisdom ! ”

Thus cried Poseidon
And dived back in the sea.
And at the coarse old sailor’s joke
I heard Amphitrite, the fat old fish-wife,
And the stupid daughters of Nereus,
Laughing under the waters.

Heinrich Heine The North Sea
Jan Gossaert Neptune and Amphitrite 1516
John Singleton Copley The Return of Neptune 1754
Tiepolo Neptune Offering Gifts to Venice 1748

Posidón o Poseidón  (griego antiguo: Ποσειδῶν3 , romanización: Poseidỗn,) es el dios del mar, las tormentas y, como «Agitador de la Tierra», de los terremotos en la mitología griega. El nombre del dios marino etrusco Nethuns fue adoptado en latín para Neptuno (Neptunus) en la mitología romana, siendo ambos dioses del mar análogos a Poseidón. Las tablillas en lineal B muestran que Poseidón fue venerado en Pilos y Tebas en la Grecia micénica de finales de la Edad del Bronce, pero fue integrado en el panteón olímpico posterior como hermano de Zeus y Hades. Poseidón tuvo muchos hijos y fue protector de muchas ciudades helenas, aunque perdió el concurso por Atenas contra Atenea. Le fue dedicado un himno homérico.
Triumph of Neptune and Amphitrite,Roman mosaic from Cirta, c325 AD

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Temple of Poseidon, Soúnio, Athens
Michel Koven Neptune 2011