Mythology

Kraken Mythology: The Tentacles Are Recent

Kraken mythology gets pictured as an ancient Viking legend with tentacles. The word is 18th-century, and the grabbing arms come from a bishop's book, not a saga.

Last updated 2026-09-22

Pierre Dénys de Montfort's 1801 engraving Le Poulpe Colossal, showing a giant many-armed sea creature wrapped around a three-masted sailing ship.
Le Poulpe Colossal, Pierre Dénys de Montfort, 1801, via Wikimedia Commons, public domain

Core summary

The "kraken mythology" most searches assume is Viking-age is nothing of the kind: the word first appears in a 1646 Norwegian glossary and settles into English by 1755, and the tentacled, ship-seizing image most people actually picture comes specifically from Bishop Erik Pontoppidan's 1752-53 Natural History of Norway. The genuinely medieval Norse material, the hafgufa described in the mid-13th-century King's Mirror and in the Icelandic Örvar-Odds saga, has no arms at all; it is an island-sized fish that lures prey with vomit and swallows everything at once, a story some scholars trace back further still to a Greek Christian bestiary creature imported into Iceland. A 2023 peer-reviewed whale study even found the medieval bait-and-swallow description matches a real, only recently documented whale feeding strategy.

Search "kraken mythology" and the timeline is centuries too old

Most people picture the kraken as a Viking-age legend: an octopus the size of an island, arms wrapping around a longship's hull, a story passed down from the same culture that gave the world Thor and Odin. None of that survives contact with the actual written record. The word itself is a relatively late addition to European folklore, the famous grabbing arms come from a specific 18th-century book rather than any saga, and the sea monster medieval Norse writers really did describe behaved nothing like the creature in that mental picture.

Untangling those layers means tracing three separate things that got fused together long after the fact: a word, an image, and a much older story that the word and image eventually attached themselves to.

The word doesn't go back nearly as far as the legend

The earliest documented use of the word sits in a Norwegian dialect glossary compiled by Christen Jensøn in 1646, already applying it to a sea creature. The specific spelling "kraken" settles into wider circulation by 1755, the year an English translation of a Danish bishop's natural history book carried it into the broader European imagination. Even the root word has nothing to do with the sea. Norwegian dictionaries trace "krake" back to Old Norse "kraki", meaning a gnarled or crooked tree trunk, related to "krókr", a hook; the same root gave Norwegian and Swedish fishermen their word for a simple grapnel anchor made from a bent spruce branch weighted with a stone.

The Icelandic philologist Finnur Jónsson proposed in 1920 that the name stuck to a sea monster because a crooked, branching piece of driftwood conjures roughly the same silhouette as a many-armed animal. If that reading holds, the word now used for a tentacled leviathan started out meaning something closer to "crooked stick."

The tentacles come from a bishop's book, not a saga

The image most searches actually want, a many-armed beast broad enough to pass for an island and strong enough to seize a ship, has a specific author and a specific publication date. Erik Pontoppidan, the Lutheran bishop of Bergen, described it at length in Forsøg til Norges Naturlige Historie, published in Copenhagen in 1752 and 1753. English readers met the passage through an 1755 London translation, which renders the animal as "round, flat and full of arms," with "horns" tall enough to stand "as high and as large as the masts of middle-siz'd vessels." The creature does not chase ships so much as ambush them from below: it "opens his arms, or horns, seizes and swallows his welcome guests," and Pontoppidan blames most drownings on the whirlpool it leaves behind when it dives back under, not on a direct attack.

Pontoppidan did not invent the name from nothing. Eighteen years earlier, in 1734, the Dano-Norwegian missionary Hans Egede had already written about the "kraken" of Norwegian waters and equated it with a much older figure from Icelandic tradition, the hafgufa, covered in the next section. What Pontoppidan supplied was the vivid, widely translated physical description, arms and all, that illustrators and novelists later ran with; Victor Hugo folded it into his 1866 novel Toilers of the Sea, and Jules Verne gave it a starring role in Twenty Thousand Leagues Under the Seas. None of them were working from a saga.

Pierre Dénys de Montfort's 1801 engraving Le Poulpe Colossal, showing a giant many-armed sea creature wrapped around a three-masted sailing ship.
Le Poulpe Colossal, Pierre Dénys de Montfort, 1801, via Wikimedia Commons, public domain

The medieval sea monster had no arms at all

Go back another five centuries into the actual Old Norse and Old Norwegian textual record, and the tentacles disappear entirely. The mid-13th-century Norwegian instructional text Konungs skuggsjá, the King's Mirror, has a father describe to his son a creature called the hafgufa: a fish so enormous that sailors mistake it for an island, seen so rarely that the King reasons only two of them can exist in the world, since the seas would otherwise be full of their young. Its hunting method is not grabbing. The King's Mirror says it belches out a cloud of bait that draws every fish nearby toward its open mouth, then closes its jaws and swallows the whole crowd at once.

A related creature, the lyngbakr, or "heather-back," appears in the Icelandic Örvar-Odds saga. The saga's oldest form is usually dated to the late 13th century, and the fullest surviving account of the hafgufa and lyngbakr episode comes from a longer 14th-century redaction, in which Örvar-Oddr's crew sail their ship between what they take for two rocky reefs, only to learn afterward that they had sailed straight through the monster's jaws and nostrils. No arms, no attack on the hull, no shipwreck by force. The danger in the medieval version is mistaking a living animal for land. This is the same Icelandic manuscript culture, working generations after Christianization, that also wrote down the Aesir and Vanir gods most people picture when they hear "Norse mythology" at all.

The island monster may not even be native to Norway

There's a further complication: the island-shaped hafgufa may not be a purely Norse invention to begin with. The Icelandic scholar Halldór Hermannsson traced its closest ancestor to the aspidochelone, a giant turtle-island from the Physiologus, a Greek-origin Christian bestiary that circulated across medieval Europe and reached Iceland in translation reworked as a whale rather than a turtle, luring prey with a sweet scent before swallowing it. Two 17th-century scholars went further and merged the traditions outright. The Danish physician Thomas Bartholin, writing in 1657, declared the hafgufa and lyngbakr to be a single beast and identified it with the giant fish of the Irish Voyage of St. Brendan, on whose back the traveling monks were said to have celebrated Mass before the "island" sank beneath them; the Icelandic writer Jón Guðmundsson made the identical connection in his own Natural History of Iceland.

If that reading holds, the half of this story that genuinely predates Pontoppidan by five hundred years did not originate as pagan Viking folklore at all. It reached Iceland through Christian bestiary literature written in Greek, centuries before any bishop added arms to it, arriving on the same wave of Christian institutions that took over the island's religious life after Iceland's formal conversion around 1000 CE.

A 2023 whale study revived one detail nobody expected

One piece of the King's Mirror account turned out to be less fantastical than seven centuries of readers assumed. In 2023, a team led by maritime archaeologist John McCarthy published a study in Marine Mammal Science comparing historical sea-monster accounts against a real, only recently documented whale behavior called trap feeding, in which a whale floats near-motionless at the surface with its mouth open, letting fish swim in before it snaps shut, sometimes after releasing a plume of bubbles or vomit that concentrates the prey first. Of every historical account the team surveyed, the hafgufa passage in the King's Mirror was the closest documented match to that behavior, a description written roughly 770 years before marine biologists formally described the strategy in living whales.

The bait-and-swallow detail that medieval Norwegian scribes filed under monster lore may be a genuine, if unlabeled, whale-watching record. It just took modern researchers until 2023 to notice.

Frequently asked questions

Who killed the Kraken in Greek mythology?

Nobody, because no ancient Greek text mentions a kraken. That question usually traces back to the 1981 film Clash of the Titans, whose writers swapped the Norse word "kraken" in for Cetus, the actual sea monster in the Greek myth of Perseus and Andromeda. In most classical retellings Perseus stops Cetus by turning it to stone with Medusa's severed head; Ovid's Metamorphoses instead has him kill it with his sword. Either way, the word "kraken" never appears in any version the ancient Greeks told.

Does the Kraken exist?

No animal matching Pontoppidan's ship-grabbing description has ever been documented, but two real things likely fed the legend. The giant squid, Architeuthis, is a genuine deep-sea animal that can exceed 10 meters and didn't receive a formal scientific name until the 19th century, well after the kraken's reputation was already established. Separately, marine biologists publishing in 2023 found that the older hafgufa's bait-and-swallow method matches a whale hunting strategy only catalogued in living animals in recent years; that paper is covered in the last section above.

Is the Kraken Greek or Norse mythology?

Norse and Norwegian, not Greek. The word and its popular tentacled image trace to an 18th-century Danish bishop's book on Norway's wildlife, and the older sea-monster tradition it drew on, the hafgufa, comes down through Norway's and Iceland's own medieval writings. Ancient Greek mythology has its own sea monster tradition, most famously Cetus from the Perseus and Andromeda story, but the two traditions developed independently and only get confused because modern films borrowed the more dramatic Norse name.

What's the difference between the Kraken and the hafgufa?

Mainly five centuries and a body plan. The hafgufa is the older figure: no arms, large enough that sailors in most medieval accounts mistook it for land, luring prey with belched-up bait and then gulping down everything that gathered, a description that goes back to two 13th-century Norse and Icelandic texts covered above. "Kraken" is the newer name, first written down in 1646 and popularized by Pontoppidan in the 1750s, by which point the creature had picked up the ship-seizing arms and the deadly whirlpool that define the popular image today. Hans Egede explicitly linked the two names as early as 1734, so the identification itself is old, even though the added anatomy is not.

Did the Vikings believe in the Kraken?

Not under that name. The Viking Age is generally dated from roughly 793 to 1066 CE, and the word "kraken" isn't attested until 1646, centuries after it ended. What Viking-era Scandinavians might have believed about giant sea creatures isn't directly recorded either; the hafgufa material that comes closest survives in texts written down in the mid-13th century and later, by authors working in a Christian literary tradition rather than transcribing pagan oral belief in real time, the same gap in the record covered in more depth in this site's rundown of Norse mythological creatures.

Who was Erik Pontoppidan?

A Danish-Norwegian clergyman who took charge of the Lutheran diocese covering Bergen in 1747, whose two-volume survey of the country's wildlife came out in the early 1750s under a Danish title that translates loosely to An Attempt at Norway's Natural History. Alongside genuine zoology, the book included his detailed, much-reprinted description of the kraken, arms, horns, and ship-sinking whirlpool included, which became the template most later depictions of the creature followed.

What is trap feeding in whales?

A documented whale hunting strategy: the whale holds still with its jaws parted just below or at the surface, sometimes first releasing bubbles or vomit to draw fish in, then closes its mouth once enough prey has gathered inside. The 2023 paper covered above, led by researcher John McCarthy, found this behavior closely matches the feeding method a medieval Norse text attributes to the hafgufa, suggesting the old account may describe a real whale strategy that took scientists until the 21st century to formally document.

Is the Kraken good or evil?

Neither, in the sources that describe it. The Bergen bishop who wrote the fullest 18th-century account of it treats the kraken as a natural hazard rather than a deliberate villain: most of the drownings he blames on it happen when a diving animal churns up a whirlpool underneath a ship, not from any targeted attack on the crew. The older hafgufa is even less menacing on purpose, a huge animal that mistakes ships for prey while feeding rather than a monster interested in destruction for its own sake.

Was the Kraken bigger than the megalodon?

There's no way to size them against each other, because only one of the two ever existed. Megalodon, the prehistoric shark, is estimated by paleontologists at somewhere between roughly 14 and 24 meters long depending on the method used, a range built from fossil teeth and vertebrae. The kraken has no fixed size at all: Pontoppidan's 18th-century description just compares its arms to the masts of a mid-sized ship, with no number attached, because it describes a legend rather than a species anyone has measured.

Written and edited by the MythCairn Editorial Team