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A sea serpent or sea dragon is a type of dragon described in various mythologies, most notably Greek (Cetus, Echidna, Hydra, Scylla), Mesopotamian (Tiamat), Hebrew (Leviathan), and Norse (Jörmungandr).

Sea Serpent
Sea serpent.jpg
A sea serpent from Olaus Magnus's book
History of the Northern Peoples (1555).
Grouping Legendary Creature
Sub grouping Sea monster
Other name(s) Worm, wyrm, cetus
Country Various
Habitat Sea



Olaus Magnus's Sea Orm, 1555
The first American sea serpent, reported from Cape Ann, Massachusetts, in 1639
Sea serpents, Ama Temple, Macao

The "Drachenkampf" mytheme, the chief god in the role of the hero slaying a sea serpent, is widespread both in the Ancient Near East and in Indo-European mythology, e.g. Lotan and Hadad, Leviathan and Yahweh, Tiamat and Marduk (see also Labbu, Bašmu, Mušḫuššu), Illuyanka and Tarhunt, etc. The Hebrew Bible also has less mythological descriptions of large sea creatures as part of creation under God's command, such as the Tannin mentioned in Book of Genesis 1:21 and the "great serpent" of Amos 9:3. In the Aeneid, a pair of sea serpents killed Laocoön and his sons when Laocoön argued against bringing the Trojan Horse into Troy.

In antiquity and in the bible, dragons were imagined as huge serpentine monsters, which means that the image of a fire-breathing dragon with four/two legs and wings came much later—in the late Middle Ages; Most of stories say that they live in the sea, the Babylonian myths of Tiamat, the myth of the Hydra, Scylla, Cetus and Echidna in the Greek mythology and maybe even the Leviathan, confirm that.

In Norse mythology, Jörmungandr, or "Midgarðsormr" was a sea serpent so long that it encircled the entire world, Midgard. Some stories report of sailors mistaking its back for a chain of islands. Sea serpents also appear frequently in later Scandinavian folklore, particularly in that of Norway.[1][2]

In 1028 AD, Saint Olaf is said to have killed a sea serpent in Valldal, Norway, throwing its body onto the mountain Syltefjellet. Marks on the mountain are associated with the legend.[3][4] In Swedish ecclesiastic and writer Olaus Magnus's Carta marina, many marine monsters of varied form, including an immense sea serpent, appear. In his 1555 work History of the Northern Peoples, Magnus gives the following description of a Norwegian sea serpent:

Those who sail up along the coast of Norway to trade or to fish, all tell the remarkable story of how a serpent of fearsome size, 200 feet long and 20 feet wide, resides in rifts and caves outside Bergen. On bright summer nights this serpent leaves the caves to eat calves, lambs and pigs, or it fares out to the sea and feeds on sea nettles, crabs and similar marine animals. It has ell-long hair hanging from its neck, sharp black scales and flaming red eyes. It attacks vessels, grabs and swallows people, as it lifts itself up like a column from the water.[5][6]


Tales of sea serpents were either partially or perhaps wholly inspired by the giant oarfish, otherwise known as the king of herrings. The oarfish is the longest bony fish in the world and is capable of reaching lengths of up to 50 feet. It typically thrives at depths of up to 3,000 feet, making sightings rare. Unlike the mythical sea serpent, however, the oarfish is toothless and quite harmless.

Notable legendsEdit

A sea serpent depicted in the coat of arms of Seljord in Norway
Sea serpent reported by Hans Egede, Bishop of Greenland, in 1734. Henry Lee suggested the giant squid as an explanation.
The "Great Sea Serpent" according to Hans Egede
Maned sea serpent from Bishop Erik Pontoppidan's 1755 work Natural History of Norway
The Gloucester sea serpent of 1817
A hairy sea serpent
Albert Koch's 115-foot-long (35 m) "Hydrarchos" fossil skeleton from 1845. It was found to be an assembled collection of bones from at least five fossil specimens of Basilosaurus.
Supposed Appearance Of The Great Sea-Serpent, From H.M.S. Plumper, Sketched By An Officer On Board, Illustrated London News, 14 April 1849
The sea serpent spotted by the crew of HMS Daedalus in 1848
Another of the original illustrations of the HMS Daedalus encounter
Oarfish that washed ashore on a Bermuda beach in 1860. The animal was 16 feet long and was originally described as a sea serpent.

An apparent eye-witness account is found in Aristotle's Historia Animalium. Strabo makes reference to an eye witness account of a dead sea creature sighted by Poseidonius on the coast of the northern Levant. He reports the following: "As for the plains, the first, beginning at the sea, is called Macras, or Macra-Plain. Here, as reported by Poseidonius, was seen the fallen dragon, the corpse of which was about a plethrum [100 feet] in length, and so bulky that horsemen standing by it on either side could not see one another; and its jaws were large enough to admit a man on horseback, and each flake of its horny scales exceeded an oblong shield in length."(Geography, book 16, chapter two, paragraph 17) The creature was seen by Poseidonius, a Philosopher, sometime between 130 and 51 BC.

Hans Egede, the national saint of Greenland, gives an 18th-century description of a sea serpent. On July 6, 1734 his ship sailed past the coast of Greenland when suddenly those on board "saw a most terrible creature, resembling nothing they saw before. The monster lifted its head so high that it seemed to be higher than the crow's nest on the mainmast. The head was small and the body short and wrinkled. The unknown creature was using giant fins which propelled it through the water. Later the sailors saw its tail as well. The monster was longer than our whole ship", wrote Egede. (Mareš, 1997)

See alsoEdit


  1. ^ "Sea Serpent?". By Archived from the original on October 25, 2013. Retrieved August 21, 2012. 
  2. ^ "The Unexplained Mystery of the Sea Serpent". By Crypted Chronicles (March 18, 2012). Retrieved August 21, 2013. 
  3. ^ "Ormen i Syltefjellet". Archived from the original on 2011-07-24. 
  4. ^ "Galleri NOR". Retrieved 2014-07-10. 
  5. ^ "Norse Mythology - Jormungandr". By Oracle Thinkquest. Retrieved August 21, 2013. 
  6. ^ Water Monsters. Gail B. Stewart (author of the book) of Google Books. Retrieved August 21, 2013. 

Further readingEdit

External linksEdit