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In Norse mythology, Jörmungandr (Old Norse: Jǫrmungandr, pronounced [ˈjɔrmunˌɡandr̥], meaning "huge monster"), also known as the Midgard (World) Serpent (Old Norse: Miðgarðsormr), is a sea serpent, the middle child of the giantess Angrboða and Loki. According to the Prose Edda, Odin took Loki's three children by Angrboða—the wolf Fenrir, the death goddess Hel, and Jörmungandr—and tossed Jörmungandr into the great ocean that encircles Midgard. The serpent grew so large that it was able to surround the earth and grasp its own tail. As a result, it received the name of the Midgard Serpent or World Serpent. When it releases its tail, Ragnarök will begin. Jörmungandr's arch-enemy is the thunder-god, Thor. It is an example of an ouroboros.

Sources

The children of Loki by Willy Pogany

"The children of Loki" (1920) by Willy Pogany.

The major sources for myths about Jörmungandr are the Prose Edda, the skaldic poem Húsdrápa, and the Eddic poems Hymiskviða and Völuspá. Other sources include kennings in other skaldic poems. For example, in Þórsdrápa, faðir lögseims, "father of the sea-thread", is used as a kenning for Loki. There are also image stones from ancient times depicting the story of Thor fishing for Jörmungandr.

Stories

There are three preserved myths detailing Thor's encounters with Jörmungandr:

Lifting the cat

Thor and Hymir

Thor goes fishing for the Midgard Serpent in this picture from an 18th-century Icelandic manuscript

In one, Thor encounters the giant king Útgarða-Loki and has to perform deeds for him, one of which was to lift the serpent in the form of a colossal cat, disguised by magic, as a test of strength. Thor is unable to lift such a monstrous creature as Jörmungandr, but does manage to raise it far enough that it lets go of the ground with one of its four feet. When Útgarða-Loki later explains his deception, he describes Thor's lifting of the cat as an impressive deed.

Thor's fishing trip

Another encounter comes when Thor goes fishing with the giant Hymir. When Hymir refuses to provide Thor with bait, Thor strikes the head off Hymir's largest ox to use as his bait. They row to a point where Hymir often sat and caught flat fish, where he drew up two whales, but Thor demands to go further out to sea, and does so despite Hymir's protest.

Thor then prepares a strong line and a large hook and baits it with the ox head, which Jörmungandr bites. Thor pulls the serpent from the water, and the two face one another, Jörmungandr dribbling poison and blood. Hymir goes pale with fear, and as Thor grabs his hammer to kill the serpent, the giant cuts the line, leaving the serpent to sink beneath the waves.

This encounter with Thor seems to have been one of the most popular motifs in Norse art. Four picture stones that have been linked with the myth are the Altuna Runestone, Ardre VIII image stone, the Hørdum stone, and the Gosforth Cross. A stone slab that may be a portion of a second cross at Gosforth also shows a fishing scene using an ox head. Of these, the Ardre VIII stone is the most interesting, with a man entering a house where an ox is standing, and another scene showing two men using a spear to fish. The image on this stone is dated to the 8th or 9th century. If the stone is correctly interpreted as depicting this myth, it demonstrates that the myth was in a stable form for a period of about 500 years prior to the recording of the myth in the Prose Edda around the year 1220.

Final battle

Thor und die Midgardsschlange

Thor and the Midgard Serpent, Emil Doepler painting.

The last meeting between the serpent and Thor is predicted to occur at Ragnarök, when Jörmungandr will come out of the sea and poison the ocean and the sky. Thor will kill Jörmungandr and then walk nine paces before falling dead, having been poisoned by the serpent's venom.

Analysis

John Lindow draws a parallel between Jörmungandr's biting of its own tail and the binding of Fenrir, as part of a recurring theme of the bound monster in Norse mythology, where an enemy of the gods is bound but destined to break free at Ragnarok.

Family

Jötunn Genealogy in Norse mythology Names in Bold are Vanir Names in Italics are Æsir
 
 
 
 
 
 
 
 
 
 
 
Ymir
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Þrúðgelmir
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Bergelmir
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Bölþorn
 
Naglfari
 
 
Nörvi
 
Dellingr
 
 
 
Aurgelmir
 
 
 
Fornjót
 
Ölvaldi
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Mímir
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Iði
 
Gangr
 
Þjazi
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Bestla
 
Borr
 
 
 
 
Nótt
 
 
 
 
 
Dagr
 
Fárbauti
 
Laufey
 
Kári
 
Logi
 
Rán
 
Ægir
 
Gymir
 
Aurboða
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nerthus
 
Njörðr
 
Skaði
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Vili
 
 
 
 
Auðr
 
 
 
 
 
 
Annar
 
Helblindi
 
Býleistr
 
 
 
 
 
Glöð
 
 
Eisa and Eimirya
 
Nine Maidens
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Gerðr
 
Freyr
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sigyn
 
 
 
 
 
Loki
 
 
 
 
Angrboða
 
Heimdallr
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Odin
 
Jörð
 
 
 
 
 
 
 
 
 
 
Narfi
 
Váli
 
 
 
 
Jörmungandr
 
Hel
 
Fenrir
 
Hyrrokkin
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Thor
 
Sif
 
 
 
 
 
 
 
 
 
 
Svaðilfari
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sleipnir
 
 
 
 
 
 
 
 
Sköll
 
Hati
 
 
 
 
 
 
 
Æsir
 
 
 
 
 
Frigg

References