Kronos and Rhea's children — Zeus, Poseidon, Hades, Hera, Demeter, and Hestia — were swallowed by their father and later freed by Zeus, who led them to overthrow the Titans.
Aethra of Troezen lay with both Aegeus and Poseidon on the same night, giving Theseus dual paternity — mortal king and sea god. Aegeus left sword and sandals under a rock for the boy to claim.
Amphitrite, a Nereid, fled Poseidon's courtship until a dolphin persuaded her to accept. As queen of the sea, she bore him Triton, Rhode, and other children.
Demeter, fleeing Poseidon's pursuit, transformed into a mare, but Poseidon became a stallion and coupled with her, producing the divine horse Arion and the goddess Despoina.
Iphimedeia bore Poseidon the giant twins Otus and Ephialtes, the Aloadae, who grew to enormous size and attempted to storm Olympus by piling mountains upon each other.
Poseidon and Libya produced the twins Agenor and Belus, who became kings of Phoenicia and Egypt respectively, founding the great royal dynasties of the eastern Mediterranean.
Poseidon lay with Medusa in Athena's temple. When Perseus later beheaded Medusa, both Pegasus and Chrysaor sprang from her severed neck, born of Poseidon's divine seed.
Poseidon took the form of the river god Enipeus to lie with Tyro, who bore him the twins Pelias and Neleus, founders of Iolcus and Pylos.
Poseidon rescued Amymone from a satyr in the parched land of Argos, then lay with her and struck the ground with his trident to reveal the springs of Lerna. She bore him Nauplius, founder of the city that bears his name.
Orion is the son of Poseidon and the Gorgon Euryale, according to Hesiod. Poseidon granted him the ability to walk on water.
⚠ Orion's genealogy varies widely. Other traditions describe him as earth-born (autochthonous), born from the urine of three gods (Hyginus), or son of Hyrieus alone.
Charybdis is the daughter of Poseidon and Gaia. Zeus struck her with a thunderbolt for flooding lands, transforming her into the deadly whirlpool monster.
Antaeus, the Libyan giant son of Gaia and Poseidon, drew invincible strength from contact with his mother the earth. Heracles defeated him by lifting him off the ground.
Poseidon carried Theophane to the island of Crumissa and transformed them both — she into a ewe, he into a ram — producing Chrysomallus, the golden-fleeced ram whose fleece Jason and the Argonauts would one day seek.
Polyphemus is the son of Poseidon and the sea nymph Thoosa. Odysseus's blinding of Polyphemus in his cave provoked Poseidon's relentless persecution of the hero across the seas.
Poseidon sired Bellerophon, granting his son the divine favor that allowed him to tame Pegasus and achieve feats no mortal could match — until hubris drove him to fly toward Olympus.
⚠ Homer (Iliad 6.155) names Glaucus son of Sisyphus as the father. The divine paternity from Poseidon appears in Apollodorus (Bibliotheca 2.3.1) and Hesiod's Catalogue of Women (fr. 43a M-W).
Poseidon lay with Caeneus (then called Caenis) and, at her request, transformed her into an invulnerable male warrior who later fought the Centaurs at the Lapith wedding.
Poseidon took the young Pelops to Olympus as his beloved and cupbearer, later giving him a golden chariot with winged horses to win Hippodamia's hand.
Hera, Poseidon, and Athena conspired to overthrow Zeus and bound him in chains, until Thetis summoned the Hundred-Handed Briareus to free the king of the gods and cow the rebels into submission.
Apollo and Poseidon served Laomedon for a year, building the mighty walls of Troy. When the work was done, Laomedon refused them their promised payment, threatening to cut off their ears and sell them as slaves.
Poseidon punished Cassiopeia for her boast against the Nereids by sending a flood and the sea monster Cetus to ravage Aethiopia, ultimately condemning her daughter Andromeda to be sacrificed.
Poseidon cursed Minos after the king refused to sacrifice the Cretan Bull, causing Pasiphae to desire the bull and leading to the birth of the Minotaur.
Poseidon relentlessly persecuted Odysseus across the seas for blinding his son, the Cyclops Polyphemus.
Poseidon wielded the trident forged by the Cyclopes against the Titans in the Titanomachy. After victory, he received dominion over the seas in the three-way division of the cosmos.
Poseidon split the rock Ajax the Lesser clung to after the hero boasted of surviving the sea without divine aid, drowning him in the waves.
Poseidon struck Erechtheus dead with his trident to avenge the death of his son Eumolpus, whom the Athenian king had slain in the war between Athens and Eleusis.
Aphrodite destroyed Hippolytus for his devoted chastity and rejection of her worship, inflaming Phaedra with forbidden desire for her stepson. When the catastrophe unfolded, Theseus cursed his own son using one of Poseidon's granted wishes, and the sea god sent a monstrous bull that wrecked the young hunter's chariot and killed him.
Poseidon pursued the giant Polybotes across the sea during the Gigantomachy and crushed him by hurling a piece of the island of Kos upon him, creating the isle of Nisyros.
Proteus served Poseidon as herdsman of the god's sea creatures, tending his flocks of seals on the island of Pharos near the mouth of the Nile.
Triton serves as herald of his father Poseidon, blowing his conch shell to calm or raise the seas.
Poseidon sent the Cretan Bull from the sea as a sign of divine favor for Minos to sacrifice, but Minos kept the magnificent beast for himself.
The twelve principal gods of the Greek pantheon who overthrew the Titans and ruled from Mount Olympus. The canonical members varied by tradition, with Hestia sometimes yielding her seat to Dionysus.
Nethuns, Poseidon, and Neptune are the Etruscan, Greek, and Roman water deities — the Roman name Neptune derives directly from Etruscan Nethuns, and both Greek Poseidon and Etruscan Nethuns were identified through cultural interchange across the Mediterranean.
Poseidon lay with Medusa in Athena's temple, and their offspring Pegasus and Chrysaor were born when Perseus beheaded the Gorgon. Athena's rage at the desecration had cursed Medusa into her monstrous form.
Both Poseidon and Apollo courted Hestia, but she refused them both, swearing by Zeus's head to remain a virgin forever, touching the head of aegis-bearing Zeus to seal her unbreakable oath.
Cecrops judged the contest between Athena and Poseidon for patronage of Athens. He ruled in Athena's favor after she offered the olive tree, while Poseidon had produced a salt spring on the Acropolis.
After defeating the Titans, Zeus, Poseidon, and Hades drew lots to divide the cosmos. Zeus won the sky, Poseidon the sea, and Hades the Underworld, while earth and Olympus remained common ground.
Poseidon's curse on Minos — making Pasiphae desire the Cretan Bull — was the direct cause of the Minotaur's birth. The god punished Minos for failing to sacrifice the magnificent white bull Poseidon had sent from the sea.
Aeacus helped Poseidon and Apollo build the walls of Troy. The mortal-built section was prophesied to be Troy's weakness, and indeed Aeacus's own grandsons Ajax and Achilles later besieged those very walls.
Poseidon snatched Aeneas from the battlefield before Achilles could strike the killing blow, declaring that Aeneas was fated to survive Troy's fall and that his line would rule the Trojans after Priam's house fell from Zeus's favor.
Zeus punished Poseidon and Apollo by sending them to serve King Laomedon of Troy. Poseidon built Troy's legendary walls while Apollo tended the king's cattle. When Laomedon refused payment, Poseidon sent a sea monster against Troy.
Poseidon negotiated the release of Ares and Aphrodite from Hephaestus's golden net, guaranteeing that Ares would pay the fine owed to the cuckolded smith god.
After her death, Poseidon placed Cassiopeia among the stars as a constellation, but as punishment rather than honor — she revolves around the celestial pole, spending half the year hanging upside down on her throne.
Poseidon sent the sea monster Cetus to devastate the Ethiopian coast, answering the Nereids' appeal for vengeance after Cassiopeia's boast that she surpassed them in beauty.
Poseidon was father of the younger Cyclopes, the savage shepherds of Thrinacia. When Odysseus blinded Polyphemus, Poseidon's son, the sea god cursed the hero's homeward voyage.
In Ovid's Metamorphoses, Poseidon struck the earth with his trident to release the flood waters at Zeus's command, then later ordered the seas to withdraw, ending the deluge that Deucalion and Pyrrha survived.
In the Iliad, Hypnos put Zeus to sleep so Poseidon could freely intervene on behalf of the Greeks at Troy. Hypnos sped directly to Poseidon to report Zeus slumbered, turning the battle's tide.
Poseidon granted Mestra the power of shape-shifting, and when her father Erysichthon sold her repeatedly to feed his cursed hunger, she called upon the god to transform her and escape each new master.
Poseidon gifted the immortal horses Balius and Xanthus to Peleus at his wedding to Thetis. Peleus later gave them to Achilles, who drove them at Troy.
According to Herodotus, Poseidon split the mountains apart to create the Vale of Tempe, allowing Peneus's river to flow from Thessaly to the sea through the gorge between Olympus and Ossa.
Prometheus's secret about Thetis also protected Poseidon, who desired her. When Prometheus revealed that Thetis's son would surpass his father, both Zeus and Poseidon withdrew their pursuit of the sea goddess.
In Pausanias's Arcadian tradition, Rhea saved the infant Poseidon from Kronos by hiding him among a flock of lambs and telling Kronos she had given birth to a foal, which he swallowed instead.
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