Web Theoi
KETOS AITHIOPIOS
 
Greek Name Transliteration Latin Name Translation
Κητος Αιθιοπιος Kêtos Aithiopios Cetus Aethiopius Ethiopian Monster
Θηρ Θαλασσιος Thêr Thalassios Belua Ponti Monster of the Deep
Perseus, Andromeda & the Sea-Dragon | Roman fresco from the Imperial Villa at Boscotrecase C1st B.C. | Metropolitan Museum of Art

Perseus, Andromeda & the Sea-Dragon,
Roman fresco Imperial Villa at Boscotrecase
C1st B.C., Metropolitan Museum of Art

THE KETOS AITHIOPIOS (or Ethiopian Cetus) was a sea-monster sent by Poseidon to ravage the land of Aithiopia as punishment for Queen Kassiopeia's hubristic boast that her daughter Andromeda was more beautiful than the Nereides. To assuage the wrath of the sea-gods, the girl was chained to the rocks as a sacrificial offering and feast for the dragon. It was at this time that Perseus was flying back to Greece with the head of Medousa. He spied the girl, flew down, slew the monster and carried her off to be his bride. Some say the hero turned the monster to stone, a rock which ancient tourists were shown near the Lebanese town of Joppa.

The Sea-Monster, along with Perseus, Andromeda, and her parents King Kepheus and Queen Kassiopeia, were all placed amongst the stars of the sky as Constellatons.

PARENTS
Probably PHORKYS & KETO, though nowhere stated

ENCYCLOPEDIA

ETHIOPIAN SEA MONSTER. Cassiopeia boasted of her daughter Andromeda's beauty, and said that she surpassed the Nereids. The latter prevailed on Poseidon to visit the country by an inundation, and a sea-monster was sent into the land. The oracle of Ammon promised that the people should be delivered from these calamities, if Andromeda was given up to the monster; and Cepheus, being obliged to yield to the wishes of his people, chained Andromeda to a rock. Here she was found and saved by Perseus, who slew the monster and obtained her as his wife. (Apollod. ii. 4. § 3 ; Hygin. Fab. 64; Ov. Met. iv. 663, &c.) Athena placed her among the stars, in the form of a maiden with her arms stretched out and chained to a rock, to commemorate her delivery by Perseus. (Hygin. Poet. Astr. ii. 10, &c.; Eratosth. Catast. 17; Arat. Phaen. 198.) Conon (Narrat. 40) gives a wretched attempt at an historical interpretation of this mythus. The scene where Andromeda was fastened to the rock is placed by some of the ancients in the neighbourhood of Iope in Phoenicia, while others assign to it a place of the same name in Aethiopia. The tragic poets often made the story of Andromeda the subject of dramas, which are now lost.

Source: Dictionary of Greek and Roman Biography and Mythology.


Pseudo-Apollodorus, Bibliotheca 2. 43 (trans. Aldrich) (Greek mythographer C2nd A.D.) :
"Arriving in Aithiopia, which Kepheus ruled, Perseus came upon his daughter Andromeda laid out as a meal for a Ketos. It seems that the king's wife Kassiepeia had challenged the Nereides in beauty, boasting that she outdid them all. As a result the Nereides were in a rage, and Poseidon in sympathetic anger sent a flood-tide upon the land and a ketos as well. The oracle of Ammon prophesied an end to the trouble if Kassiopeia's daughter Andromeda were served up to the Ketos as a meal, so Kepheus, pushed to it by the Aithiopians, tied his daughter out on a rock. When Perseus saw her it was love at first sight, and he promised to kill the ketos and rescue the girl in return for her hand. Oaths were sworn, after which Perseus faced and slew the ketos, and set Andromeda free."

Pausanias, Description of Greece 4. 35. 9 (trans. Jones) (Greek travelogue C2nd A.D.) :
"Red water, in colour like blood, is found in the land of the Hebrews near the city of Joppa. The water is close to the sea, and the account which the natives give of the spring is that Perseus, after destroying the Ketos (Sea-Monster), to which the daughter of Kepheus was exposed, washed off the blood in the spring."

Philostratus the Elder, Imagines 1. 29 (trans. Fairbanks) (Greek rhetorician C3rd A.D.) :
"[From a description of an ancient Greek painting at Neapolis (Naples) :] No, this is not the Red Sea (thalassa Erythra) nor are these inhabitants of India, but Aithiopes (Ethiopians) and a Greek man in Aithiopia. And of the exploit which I think the man undertook voluntarily for love, my boy, you must have heard--the exploit of Perseus who, they say, slew in Aithiopia a Ketos (sea-monster) from the Atlantikos (sea of Atlas), which was making its way against herds and the people of this land. Now the painter glorifies this tale and shows his pity for Andromeda in that she was given over to the Ketos (monster). The contest is already finished and the Ketos (monster) lies stretched out on the strand, weltering in streams of blood--the reason the sea is red--while Eros (Love) frees Andromeda from her bonds. Eros is painted with wings as usual, but here, as it not usual, he is a young man, panting and still showing the effects of his toil; for before the deed Perseus put up a prayer to Eros that he should come and with him swoop down upon the creature, and Eros came, for he heard the Greek’s prayer.
The maiden is charming in that she is fair of skin though in Aithiopia . . . Her beauty is enhanced by the circumstances of the moment; for she seems to be incredulous, her joy is mingled with fear, and as she gazes at Perseus she begins to send a smile towards him." [N.B. Philostratus locates this myth on the Atlantic coast of Africa rather than the Red Sea. "Aithiopes" was a generic term meaning black African.]

Pseudo-Hyginus, Fabulae 64 (trans. Grant) (Roman mythographer C2nd A.D.) :
"Cassiope claimed that her daughter Andromeda’s beauty excelled the Nereids’. Because of this, Neptunus [Poseidon] demanded that Andromeda, Cepheus’ daughter, be offered to a Cetus. When she was offered, Perseus, flying on Mercurius’ [Hermes] winged sandals, is said to have come there and freed her from danger."

Pseudo-Hyginus, Astronomica 2. 9 :
"Euripides [Greek tragedian early C5th BC] and the rest have shown that he was the son of Phoenix, king of the Aethiopains, and father of Andromeda, the girl exposed to the sea-monster, according to the well-known tale. Perseus freed her from danger and made her his wife. And so, that the whole family be commemorated, the gods numbered Cepheus, too, among the constellations."

Pseudo-Hyginus, Astronomica 2. 11 :
"Perseus, who freed her [Andromeda] from danger when exposed to the Cetus."

Pseudo-Hyginus, Astronomica 2. 31 :
"Constellation Cetus. With regard to the Cetus, they say that it was sent by Neptunus [Poseidon] to kill Andromeda, about whom we have already spoken. But because it was killed by Perseus, on account of its huge size and his valour it was placed amongst the constellations."

Ovid, Metamorphoses 4. 669 ff (trans. Melville) (Roman epic C1st B.C. to C1st A.D.) :
"Where Cepheus ruled the Aethiopes there, innocent, by Ammon’s [Poseidon‘s] unjust decree condemned to suffer for her mother's [Kassiopeia’s] tongue, Andromeda was pinioned to a rock. When Abantiades [Perseus] saw her, had a wafting breeze not stirred her hair, her eyes not overflowed with trembling tears, he had imagined her a marble statue. Love, before he knew, kindled; he gazed entranced; and overcome by loveliness so exquisite, so rare, almost forgot to hover in the air. He glided down. `Shame on those chains!’ he cried, `The chains that you deserve link lovers’ hearts. Reveal, I beg, your name and this land’s name and why you wear these shackles.’
She at first was silent, too abashed to face a man . . . as he urged again, lest it should seem her own offence she dreaded to confess, she told her name, her country and the tale of her proud mother’s [Kasiopeia’s] beauty--boast and bane. Ere all was told a noise came from the sea, and from the ocean's depths a Belua Ponti (Sea-Monster) loomed up, its breast spread wide across the waves. She screamed. Her wretched father stood close by, her mother with him, both in dire distress, though she with juster cause. They brought no aid, but wailed and wrung their hands, as well they might, and clasped the shackled girl; and, as they clung, the stranger spoke : `Long time is left for tears, but short the hour for succour. I, Perseus, the son of Jove [Zeus] and her whom, in her prison, Juppiter’s [Zeus’] golden shower made fertile; I, Perseus, snake-haired Gorgo’s victor; I, who dared on soaring wings to ride the winds of heaven--if I should woo this damsel, none for sure could be my rival as your son-in-law. To dower so glorious I aim to add, with heaven’s help, my service; and I strike a bargain--if my valour’s bold design avail to rescue her, she shall be mine.’
They take his terms--for who would hesitate?--beseech his aid and add as dower their realm. Look! As a galley with its pointed prow furrows the sea when rowers sweat and strain, the beast breast on and rolls the waves aside.
And now it was no further from the cliff than Balearic slings can hurl the flying lead across the sky, when the son of Jove [Zeus] suddenly sprang from the ground and soared into the clouds. The Draco saw his shadow on the sea and savaged what it saw . . . Inachides [Perseus], swooping headlong through the void, attacked the monster's back and, as it roared, deep in its shoulder sank his crescent blade. Wounded so sore, the beast now reared upright, high in the air, now dived below the waves, now turned like a fierce boar in frenzy when the pack bays all around. On his swift wings Perseus eludes the snapping fangs and strikes the parts exposed and plunges his curved sword between its ribs and in its back, all rough with barnacles, and where its tapering tail ends in a fish. The beast belched purple blood, sea spume and blood together. Perseus' plumes were soaked with spray, so heavy he could trust his ankle-wings no longer; then he saw a rock, bare in the still water but awash in rising seas. On this he braced himself, his left hand on a ridge, and with his sword stabbed time and time again the monster's groin.
Cheers filled the shore and echoed round the halls of heaven. Cepheus and Cassiope with rapturous hearts saluted their new son, the stay and saviour of their house. The girl, released, stepped forth unfettered from her chains, the cause, the recompense of all his pains."

Ovid, Metamorphoses 5. 16 ff :
"[Kepheus addresses his brother Phineus the betrothed of Andromeda :] `It was not Perseus who took her [Andromeda] from you, if you want the truth; it was the Nereides and was horned Ammon’s [Poseidon‘s] wrath, it was that Belua Ponti (Sea-Monster) who came to feast upon my flesh and blood."

Propertius, Elegies 2. 28 (trans. Goold) (Roman elegy C1st B.C.) :
"Andromeda was vowed as sacrifice to the Monster of the Deep (Monstris Marinis): she, none other, became the famed wife of Perseus."

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.]

Nonnus, Dionysiaca 8. 88 ff (trans. Rouse) (Greek epic C5th A.D.) :
"Behold the sea-monster (ketos), the sickle of Perseus, the figure of Andromeda, the glare of Gorgon Medousa, whom Kronides will establish in Olympos [as constellations] by and by.”

Nonnus, Dionysiaca 18. 294 :
“Perseus killed the Ketos (Sea-monster) beside the Erythraian Sea.”

Nonnus, Dionsyiaca 25. 80 :
“Perseus killed a Ketos (Monster of the Sea); with Gorgon’s eye he turned to stone a leviathan of the deep!”

Nonnus, Dionsyiaca 30. 273 ff :
“The monster of the deep (Ther Thalassios) turned to stone [by Perseus] . . . the Nereides tremple before Andromeda’s husband.”

Nonnus, Dionysiaca 31. 10 ff :
“Seeing the heap of Andromeda’s broken chains beside the Erythraian Sea, and that rock lying on the sand, Earthshaker’s [Poseidon’s] monstrous lump [the Sea Monster turned to stone by Perseus].”

Nonnus, Dionysaica 47. 510 ff :
“Perseus turned into stone a whole huge monster of the deep (Ketos) . . . and on the wing loosed the chains of Andromeda and offered the stone seamonster as a worthy bridal gift.”


Perseus, Andromeda  & the Sea-Monster | Roman mosaic
Z47.11 KETOS,
PERSEUS
Perseus, Andromeda  & the Sea-Monster | Roman mosaic
Z47.10 KETOS,
PERSEUS
Perseus, Andromeda  & the Sea-Monster | Roman fresco
F47.4 PERSEUS,
ANDROMEDA
Perseus, Andromeda  & the Sea-Monster | Greek vase
P28.3 KETOS,
PERSEUS

Sources:

  • Apollodorus, The Library - Greek Mythography C2nd A.D.
  • Pausanias, Description of Greece - Greek Travelogue C2nd A.D.
  • Philostratus the Elder, Imagines - Greek Rhetoric C3rd A.D.
  • Hyginus, Fabulae - Latin Mythography C2nd A.D.
  • Hyginus, Astronomica - Latin Mythography C2nd A.D.
  • Ovid, Metamorphoses - Latin Epic C1st B.C. - C1st A.D.
  • Propertius, Elegies - Latin Elegy C1st B.C.
  • Pliny the Elder, Natural History - Latin Encyclopedia C1st A.D.
  • Nonnos, Dionysiaca - Greek Epic C5th A.D.