Greek Name Transliteration Latin Spelling Translation
Κητω Ketô Ceto Sea-Monster (kêtos)
Phorcys & Ceto | Roman mosaic | Bardo Museum, Tunis
Phorcys and Ceto, Roman mosaic, Bardo Museum

KETO (or Ceto) was a marine goddess who personified the dangers of the sea. She was more specifically a goddess of whales, large sharks, and sea-monsters (Greek ketea). She consorted with her brother, the sea-god Phorkys, and produced a brood of awful monsters : Ekhidna (the Viper), Skylla (the Crab), Ladon (the Dragon), the Graia (the Grey), and the Gorgones (the Terrible Ones).

As the mother of Skylla Keto was also called Krataiis (Of the Rocks), Lamia (the Shark) and Trienos (Three-Times). The last title equating her with the thrice-swallowing whirlpool-monster Kharybdis. Krataiis was also identified or confused with the goddess Hekate, a divinity whose power extended over the sea. There was also a Krataiis river in the territory of the Brutti, near the Straits of Messina in Italy.

[1.1] PONTOS & GAIA (Hesiod Theogony 238, Apollodorus 1.10)

[1.1] THE GORGONES, THE GRAIA, EKHIDNA, DRAKON HESPERIOS (by Phorkys) (Hesiod Theogony 270)
[1.2] THE GORGONES, THE GRAIA (by Phorkys) (Apollodorus 1.10)
[1.3] THE GRAIA (by Phorkys) (Hyginus Preface)
[1.4] THE GORGONES (by Gorgo) (Hyginus Preface)


[1.1] SKYLLA (by Phorkys) (Apollodorus E7.20, Apollonius Rhodius 4.828)
[1.2] SKYLLA (Homer Odyssey 12.125, Hyginus Fabulae 199)


CRATAEIS (Krataiïs), according to several traditions, the mother of Scylla. (Hom. Od. xii. 124; Ov. Met. xiii. 749; Hesych. s. v. ; Plin. H. N. iii. 10.)

Source: Dictionary of Greek and Roman Biography and Mythology.

Hesiod, Theogony 233 ff (trans. Evelyn-White) (Greek epic C8th or C7th B.C.) :
"And Pontos (the Sea) begat Nereus . . . And Pontos again fathered great Thaumas and proud Phorkys (Phorcys), being mated with Gaia (the Earth), and fair-cheeked Keto (Ceto) and Eurybia."

Hesiod, Theogony 270 & 332 ff :
"And to Phorkys (Phorcys) Keto (Ceto) bore the Graiai (Graeae), with fair faces and gray from birth, and these the gods who are immortal and men who walk on the earth call Graiai, the gray sisters, Pemphredo robed in beauty and Enyo robed in saffron . . . and the Gorgones (Gorgons) who, beyond the famous stream of Okeanos (Oceanus), live in the utmost place toward night, by the singing Hesperides: they are Sthenno, Euryale, and Medousa . . .
But [Keto] she bore another unmanageable monster like nothing human nor like the immortal gods either, in a hollow cave. This was the divine and haughty Ekhidna (Echidna), and half of her is a Nymphe with a fair face and eyes glancing, but the other half is a monstrous snake . . . [and] Keto, joined in love with Phorkys, mothered the youngest of the deadly Drakones (Dragon-Serpents) . . . that one which guards the all-golden applies."

Homer, Odyssey 12. 125 ff (trans. Shewring) (Greek epic C8th B.C.) :
"Row hard [past Skylla] and invoke Krataiis (Crataeis), she is Skylla's (Scylla's) mother; it is she who bore her to plague mankind; Krataiis will hold her from darting twice."
[N.B. Krataiis is probably Keto.]

Stasinus of Cyprus or Hegesias of Salamis, The Cypria Fragment 21 (from Herodian, One Peculiar Diction) (trans. Evelyn-White) (Greek epic C7th B.C.) :
"By him [Phorkys, Phorcys] she [Keto, Ceto] conceived and bare the Gorgones, fearful monsters who lived in Sarpedon, a rocky island in deep-eddying Okeanos (Oceanus)."

Pseudo-Apollodorus, Bibliotheca 1. 10 (trans. Aldrich) (Greek mythographer C2nd A.D.) :
"The children of Pontos (the Sea) and Ge (the Earth) were Phorkos (Phorcus), Thaumas, Nereus, Eurybia, and Keto (Ceto) . . . Phorkos and Keto had the Phorkides (Phorcides) and the Gorgones."

Pseudo-Apollodorus, Bibliotheca E7. 20 :
"Skylla (Scylla), daughter of Krataiis (Crataeis) and Trienos or Phorkos (Phorcus). She had the face and breast of a woman, but from her flanks grew six dog-heads and twelve dog-feet." [N.B. Krataiis is probably Keto.]

Apollonius Rhodius, Argonautica 4. 825 ff (trans. Rieu) (Greek epic C3rd B.C.) :
"The hateful den of Ausonian Skylla (Scylla), the wicked monster borne to Phorkys (Phorcys) by night-wandering Hekate (Hecate), whom men call Krataiis (Crataeis)."
[N.B. Krataiis is here identified with Hekate rather than with Keto.]

Pseudo-Hyginus, Preface (trans. Grant) (Roman mythographer C2nd A.D.) :
"From Pontos (Sea) and Terra [Gaia, Earth] [were born]: Thaumas, tusciuersus, Cepheus [probably a corruption of Ceto and Phorcys] . . .
From Phorcus and Ceto [were born]: Phorcides, Pemphredo, Enyo, Persis (for the last others say Dino). From Gorgon and Ceto, Sthenno, Euryale, Medusa."

Pseudo-Hyginus, Fabulae 199 :
"Scylla, daughter of the River Crataeis, is said to have been a most beautiful maiden."

Pliny the Elder, Natural History 5. 69 (trans. Rackham) (Roman encyclopedia C1st A.D.) :
"Joppa [now the Israeli town of Jaffa] is said to have existed before the flood; it is situated on a hill, and in front of it is a rock on which they point out the marks made by the chains with which Andromeda was fettered; here there is a cult of the legendary goddess Ceto (the Sea-Monster)."
[N.B. Keto was the goddess of sea-monsters and whales.]

Other Names Transliteration Latin Spelling Translation
Κραταιις Krataiis Crataeis, Cratais Mighty (krataios)
Rocky (krataileôs)


  • Homer, The Odyssey - Greek Epic C8th B.C.
  • Hesiod, Theogony - Greek Epic C8th-7th B.C.
  • Homerica, The Cypria - Greek Epic C7th B.C.
  • Apollodorus, The Library - Greek Mythography C2nd A.D.
  • Apollonius Rhodius, The Argonautica - Greek Epic C3rd B.C.
  • Hyginus, Fabulae - Latin Mythography C2nd A.D.
  • Pliny the Elder, Natural History - Latin Encyclopedia C1st A.D.