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Greek Mythology Notes

Thetis

🌿 nymphΘέτις
Sea nymph mother of Achilles
Thetis

Thetis was a sea nymph so powerful that both Zeus and Poseidon desired her — until a prophecy warned‌​‍​‍​‌​‌​‍​‌​‍​‍​‌​‌​‍​‍​‌​‍​‌​‍​‌​‍​‌​‍​‍​‌​‍​‍​‌​‌​‍​‌​‍​‌​‌ her son would surpass his father.

The Myth of Thetis

Thetis, a Nereid of extraordinary power, was desired by both Zeus and Poseidon until Prometheus revealed a prophecy: her son would surpass his father.‌​‍​‍​‌​‌​‍​‌​‍​‍​‌​‌​‍​‍​‌​‍​‌​‍​‌​‍​‌​‍​‍​‌​‍​‍​‌​‌​‍​‌​‍​‌​‌ The gods quickly married her to the mortal Peleus, and their wedding on Olympus — attended by every god — produced the discord when Eris threw the golden apple that led to Paris's judgment, Helen's abduction, and the Trojan War. Thetis bore Achilles and dipped him in the Styx to make him invulnerable, though his heel remained dry. She could not prevent his fated death at Troy but obtained divine armour from Hephaestus when Hector killed Patroclus.

Parents

Nereus and Doris

Children

Achilles

Symbols

seasilver feetarmourStyx

Fun Fact

Saturn's moon Tethys honours this family of sea deities.

Words We Inherited

English words and phrases that trace back to this myth. See our full guide to English words from Greek mythology.

Thetis (sea slug genus)

Explore Further

Thetis

🌿 nymph

Sea nymph whose son's fate drove the Iliad

Thetis was the Nereid whose son was destined to surpass his father — a prophecy so threatening that Zeus and Poseidon married her off to a mortal.

Thetis (sea slug genus)

Clymene

🌿 nymph

fame, ocean

Oceanid nymph and mother of Phaethon and the Heliades.

Perseis

🌿 nymph

Witchcraft, sun

Oceanid nymph and mother of the sorceress Circe and King Aeetes of Colchis

heliocentric

Perse

🌿 nymph

the sea, sorcery

An Oceanid nymph who married the sun god Helios and bore him Circe, Pasiphae, and Aeetes — a family of legendary sorcerers.

Amphitrite

🌿 nymph

Queen of the sea

Amphitrite was the Nereid who became queen of the sea as Poseidon's wife.

Amphitrite (genus)

Oenone

🌿 nymph

healing, prophecy

Mountain nymph of Mount Ida who was Paris's first wife before Helen.

Galatea

🌿 nymph

Sea nymph loved by a Cyclops

Galatea was a Nereid loved by the Cyclops Polyphemus — but she loved the mortal Acis.

galacticgalaxy

Autonoe

🌿 nymph

nature, grief

A Nereid and, in separate traditions, a daughter of Cadmus who witnessed the death of her son Actaeon.

Beroe

🌿 nymph

cities, the sea

A nymph born to Aphrodite and Adonis, whose hand in marriage was contested by Poseidon and Dionysus.

Beirut (city named for her)

Idyia

🌿 nymph

Knowledge, Colchis

Oceanid nymph known as the knowing one and queen of Colchis beside King Aeetes

idea

Rhode

🌿 nymph

the sea, islands

A sea nymph, daughter of Poseidon and Amphitrite (or Aphrodite), who gave her name to the island of Rhodes.

Rhodes (the island)rhodium (element, named for the rose, connected to Rhodes)

Periboea

🌿 nymph

the sea, giants

A Naiad or sea nymph who bore the giant Nausithous to Poseidon, becoming the ancestress of the Phaeacians.