Greek Mythology Notes
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Poseidon (Earth-Shaker)

god
Ποσειδῶν
God of the sea, earthquakes, and horses

Poseidon was the god of the sea and earthquakes whose moods determined whether sailors lived or died — and whose grudge against Odysseus drove the Odyssey.

The Myth

Poseidon received dominion over the sea when the cosmos was divided. His trident could cause earthquakes, create springs, and summon storms. He competed with Athena for Athens (offering a salt spring vs. her olive tree) and lost. He built Troy's walls with Apollo but was cheated by Laomedon. He cursed Odysseus for blinding Polyphemus. He fathered the Cyclopes, Theseus (in some versions), and many monsters. The Greeks feared his wrath at sea above all things.

Parents

Kronos and Rhea

Children

Polyphemus, Triton, Theseus, Pegasus, many others

Symbols

tridenthorsesdolphinsearthquakes

Fun Fact

The planet Neptune is named for Poseidon's Roman counterpart — the most distant major planet, ruling the outermost "sea" of the solar system.

Words We Inherited

English words and phrases that trace back to this myth:

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