Poseidon is the ancient Greek god of the sea, earthquakes, and horses, one of the twelve Olympian deities. He was a son of the Titans Cronus and Rhea, and brother to Zeus and Hades, with whom he divided dominion over the cosmos.
Origins and Family
Poseidon’s birth and early life are recorded in Hesiod’s Theogony (c. 700 BCE). He was swallowed by his father Cronus, who feared being overthrown by his children, and later disgorged after Zeus tricked Cronus into vomiting them up. After the Olympians defeated the Titans in the Titanomachy, the three brothers drew lots to divide the world: Zeus received the sky, Hades the underworld, and Poseidon the sea. The earth and Mount Olympus remained common ground.
Poseidon’s consorts and offspring are numerous. His wife was Amphitrite, a Nereid (sea nymph), with whom he had Triton, a merman who blew a conch shell to calm or stir the waves. He also fathered the Cyclops Polyphemus with the nymph Thoosa (Homer’s Odyssey), the hero Theseus with Aethra (in some traditions), and the winged horse Pegasus with Medusa (after her death, according to Hesiod). His mortal sons often became kings, such as Bellerophon’s grandfather Sisyphus, though the lineage varies by myth.
Powers and Domains
Poseidon’s primary domain was the sea, which he ruled with a trident forged by the Cyclopes. With this trident he could stir storms, calm waters, and cause springs to burst from the earth. He was also called Enosichthon (Earth-Shaker) and Gaieochos (Earth-Holder), reflecting his power over earthquakes. In Homer’s Iliad, he is described as shaking the ground with a single step, and his wrath could sink entire fleets.
Beyond the sea, Poseidon was the god of horses, a role possibly linked to the waves’ resemblance to galloping steeds. He was said to have created the first horse, either as a gift to the city of Athens or in a contest for the city’s patronage. He was also associated with bulls, as seen in the myth of the Cretan Bull, which he sent from the sea to King Minos.
Myths and Stories
Poseidon appears in several key myths, often as a vengeful or competitive deity. One famous story is his contest with Athena for the patronage of Athens. In the version told by the Roman writer Hyginus (and echoed by later Greeks), Poseidon struck the Acropolis with his trident and produced a saltwater spring, while Athena offered an olive tree. The Athenians chose Athena, and Poseidon, in anger, flooded the plain of Attica (though some versions say he cursed the city with drought).
Another major myth involves Odysseus. In Homer’s Odyssey, Poseidon relentlessly pursues the hero because Odysseus blinded his son, the Cyclops Polyphemus. This divine grudge drives the entire plot of the epic, as Poseidon sends storms and shipwrecks to delay Odysseus’s return to Ithaca.
Poseidon also features in the story of the Trojan War. He sided with the Greeks, but when the Greeks built the wooden horse, Poseidon sent sea serpents to destroy the Trojan priest Laocoön, who had warned against accepting the horse (as told in Virgil’s Aeneid).
Worship and Cult
Poseidon was widely worshipped across the Greek world, especially in coastal cities and on islands. His sanctuaries were often located on promontories, such as the Temple of Poseidon at Sounion in Attica, which still stands today. The Isthmian Games, held near Corinth, were dedicated to him and included athletic and horse-racing events. Sailors and fishermen offered sacrifices to him before voyages, and his priests sometimes performed rituals to calm storms.
In some regions, Poseidon was also a god of freshwater. At the city of Troezen, he was worshipped as Poseidon Phytalmios (the Fertilizer), and his cult included rituals for ensuring springs and wells. His association with horses made him a patron of cavalry and chariot racing, and he was honored with horse sacrifices in some areas.
Poseidon in Art and Literature
In ancient art, Poseidon is typically depicted as a mature, bearded man holding a trident, often accompanied by dolphins, fish, or sea creatures. The famous bronze statue of Poseidon (or Zeus) from Cape Artemision (c. 460 BCE) shows him in a dynamic pose, possibly preparing to hurl his trident. On vases, he appears in scenes of the Gigantomachy, fighting alongside the other Olympians.
In literature, Poseidon appears in Homer’s Iliad and Odyssey, Hesiod’s Theogony, and in the Homeric Hymn to Poseidon, which is short and describes him as “the great god of the sea.” Later Roman authors, such as Ovid in his Metamorphoses, retold his myths with Roman names, calling him Neptune. His character in these works is consistent: powerful, moody, and quick to anger.
Comparison with Other Sea Gods
Poseidon shares traits with other Indo-European sea deities. The Roman Neptune was originally a god of freshwater and later merged with Poseidon, adopting his trident and mythology. The Norse god Njord (or Njörðr) was a sea god associated with wealth and seafaring, though he was less violent than Poseidon. In Hindu mythology, Varuna is a god of the cosmic ocean and moral order, but he is not a direct parallel. Poseidon’s unique combination of sea, earthquake, and horse domains is distinct among ancient pantheons.
Common Misconceptions
A frequent misconception is that Poseidon was the “god of the ocean” in a benevolent, all-powerful sense. In reality, the Greeks saw the sea as dangerous and unpredictable, and Poseidon reflected that: he was often hostile to mortals, and his favor had to be earned. Another error is confusing him with Triton, his son, who is a minor sea god, not the ruler of the seas. Also, Poseidon was not a god of all waters; freshwater springs and rivers had their own deities, such as the Naiads and river gods like Achelous.
Frequently Asked Questions
What is Poseidon’s symbol?
His main symbol is the trident, a three-pronged spear. He also carries a dolphin, a fish, or a horse in art, and his sacred animals include the horse, the bull, and the dolphin.
Who are Poseidon’s parents?
His parents are the Titans Cronus and Rhea. He is the brother of Zeus, Hades, Hera, Demeter, and Hestia.
Did Poseidon have any children with Medusa?
Yes, in some myths, after Medusa was killed by Perseus, the winged horse Pegasus and the giant Chrysaor sprang from her blood, fathered by Poseidon. This is mentioned in Hesiod’s Theogony.
Why did Poseidon and Athena compete for Athens?
The contest was to decide who would be the patron deity of the city. Poseidon offered a saltwater spring, while Athena offered an olive tree. The Athenians chose Athena’s gift because it was more useful, and the city was named after her.
Is Poseidon the same as Neptune?
Neptune is the Roman equivalent of Poseidon. The Romans adopted many Greek myths and applied them to their own deities, so Neptune’s stories are largely the same as Poseidon’s, though Neptune was originally a freshwater god.
What happened to Poseidon after the Trojan War?
In the Odyssey, Poseidon continues to persecute Odysseus for blinding Polyphemus. He eventually relents after Zeus orders him to stop, and Odysseus returns home. Poseidon then disappears from major myths, though he remains a powerful figure in later Greek religion.
Related
- Hades Mythology Powers: God of the Underworld
- Poseidon Myths: Greek God of the Sea
- Athena Mythology Facts: Origins, Roles & Symbols
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