Poseidon is the ancient Greek god of the sea, earthquakes, and horses, and one of the twelve Olympian deities. His myths are among the most complex in Greek mythology, blending power, vengeance, and patronage of cities and sailors.
Origins and Family
Poseidon was the son of the Titans Cronus and Rhea, making him a brother to Zeus, Hades, Hera, Demeter, and Hestia. According to Hesiod’s Theogony, Cronus swallowed each of his children at birth to prevent a prophecy that one would overthrow him. Poseidon was rescued by Zeus, who forced Cronus to regurgitate his siblings. After the Olympians defeated the Titans in the Titanomachy, the three brothers drew lots to divide the cosmos: 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 raise the waves. He also fathered the hero Theseus with Aethra, the Cyclops Polyphemus with the nymph Thoosa, and the winged horse Pegasus with Medusa, after her head was severed by Perseus. His affair with Demeter produced the horse Arion, and with the Gorgon Medusa he also sired the giant Chrysaor.
Poseidon’s Role and Attributes
Poseidon was primarily the god of the sea, but his domain extended to all bodies of water, including rivers, springs, and lakes. He was also associated with earthquakes, earning the epithet Enosichthon (Earth-Shaker) and Gaieochos (Earth-Holder). Sailors prayed to him for safe voyages and calm seas, often sacrificing horses or bulls to gain his favor. His symbols included the trident, the horse, the bull, and the dolphin.
The trident, a three-pronged spear, was his signature weapon, forged by the Cyclopes during the Titanomachy. With it, he could strike the earth to cause earthquakes, split rocks to create springs, or stir up storms. In art, he is typically depicted as a mature, bearded man with long hair, often holding the trident and sometimes riding a chariot pulled by horses or sea creatures.
Key Myths and Stories
Poseidon appears in many myths, often as a powerful but sometimes vindictive figure. One of the most famous is his contest with Athena for the patronage of Athens. According to Apollodorus, Poseidon struck the Acropolis with his trident and produced a saltwater spring (or a horse, in some versions), while Athena offered an olive tree. The Athenians chose Athena’s gift, and Poseidon, enraged, flooded the Attic plain. This myth explains the city’s name and the saltwater well on the Acropolis.
Another well-known story involves Odysseus, who blinded Poseidon’s son Polyphemus in Homer’s Odyssey. In retaliation, Poseidon cursed Odysseus with storms and delays, extending his journey home by ten years. This illustrates Poseidon’s role as a punisher of hubris and a protector of his offspring.
Poseidon also vied with other gods for cities and honors. He competed with Hera for Argos, with Helios for Corinth, and with Dionysus for Naxos, but lost most of these contests. His attempts to woo Thetis, a sea nymph, were abandoned when it was prophesied that her son would be greater than his father—so she was married to the mortal Peleus instead, leading to the birth of Achilles.
Worship and Cults
Poseidon was widely worshipped across Greece, particularly in coastal regions and on islands. His sanctuaries were often located near the sea, such as the Temple of Poseidon at Sounion, which still stands on a cliff overlooking the Aegean. The Isthmian Games, held near Corinth, were dedicated to him and included athletic and musical competitions. These games were second only to the Olympic Games in importance.
In addition to public festivals, sailors and fishermen made private offerings to Poseidon. He was also honored as a god of horses, and in some regions, horse races were held in his honor. The Romans identified him with their god Neptune, who was originally a freshwater deity but later absorbed Poseidon’s attributes.
Poseidon in Art and Literature
Poseidon appears in many ancient Greek works, from Homer’s epics to the tragedies of Euripides. In the Iliad, he supports the Greeks against the Trojans, but in the Odyssey, he is the antagonist of Odysseus. His depiction in art evolved from a dignified god to a more dynamic, sometimes angry figure. The famous bronze statue of Poseidon from Cape Artemision (c. 460 BCE) shows him with his arm raised, possibly holding a trident or a thunderbolt, though some scholars debate whether it is Zeus.
In later Roman art, Neptune was often shown with a trident and a dolphin, and his iconography influenced Renaissance and Baroque artists. The Trevi Fountain in Rome features a central statue of Neptune, and many European cities have fountains or statues dedicated to him.
Common Misconceptions
A common misconception is that Poseidon was always hostile or evil. In reality, he was a complex deity who could be benevolent, granting safe passage to sailors and creating springs of fresh water. Another error is that Poseidon was the god of the ocean only; he was also the god of rivers, lakes, and even the underworld’s water sources. Some modern media portray him as a trivial or comedic figure, but in ancient times he was one of the most feared and respected gods.
Another misconception is that Poseidon and Neptune are identical in every way. While the Romans adopted many Greek myths, Neptune was originally a god of fresh water and horses, and his mythology was later blended with Poseidon’s. The two are not perfect equivalents.
Frequently Asked Questions
What is Poseidon’s Roman name?
Poseidon’s Roman equivalent is Neptune. The Romans identified him with their own god of water and horses, and gradually merged the two deities, adopting many Greek myths and attributes.
Why is Poseidon called the Earth-Shaker?
Poseidon was called Enosichthon or Gaieochos because he could cause earthquakes by striking the ground with his trident. This power made him both a creator and a destroyer of land, and he was often invoked to calm seismic activity.
Did Poseidon have any children with Medusa?
Yes, after Medusa was beheaded by Perseus, the winged horse Pegasus and the giant Chrysaor sprang from her neck. Both were fathered by Poseidon, who had mated with Medusa in a temple of Athena, which led to her transformation into a Gorgon.
What is the story of Poseidon and the city of Atlantis?
In Plato’s dialogues Timaeus and Critias, Poseidon is said to have created the island of Atlantis and fathered five pairs of twins with the mortal woman Cleito. He divided the island among them, and their descendants ruled Atlantis until it fell out of favor with the gods and sank into the sea.
How did Poseidon lose to Athena for Athens?
In the contest for Athens, Poseidon struck the Acropolis with his trident and produced a saltwater spring (or a horse, depending on the version). Athena offered an olive tree, which was deemed more useful. The Athenians chose Athena, and Poseidon flooded the plain in anger, but he later relented.
Is Poseidon stronger than Zeus?
In Greek mythology, Zeus is generally considered the most powerful of the gods, as he is the king of the Olympians and the god of the sky. Poseidon is powerful, but he is subordinate to Zeus, as seen in Homer’s epics where Zeus’s authority is supreme.
Related
- Zeus Mythology: King of the Gods Explained
- Hera Symbol Mythology: Peacock, Cow, and More
- Hera Mythology Origins: Greek Goddess
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