'Sea monsters' or '
leviathans' are sea-dwelling,
mythical or legendary creatures, often believed to be of immense size.
Marine
monsters can take many forms, including sea
dragons,
sea serpents, or multi-armed beasts; they can be slimy or scaly, often spouting jets of water. Often they are pictured threatening ships.
Sightings and legends
Historically, decorative drawings of heraldic dolphins and sea monsters were frequently used to
illustrate maps, such as the ''
Carta marina''. This practice died away with the advent of modern
cartography. Nevertheless, stories of sea monsters and eyewitness accounts which claim to have seen these beasts persist to this day. Such sightings are often catalogued and studied by
folklorists and
cryptozoologists.
Sea monster accounts are found in virtually all cultures that have contact with the sea. Eyewitness accounts come from all over the world. For example,
Avienus relates of
Carthaginian explorer Himilco's voyage "...there monsters of the deep, and beasts swim amid the slow and sluggishly crawling ships." (lines 117-29 of Ora Maritima).
Sir Humphrey Gilbert claimed to have encountered a lion-like monster with "glaring eyes" on his return voyage after formally claiming
St. John's, Newfoundland (
1583) for England. Another account of an encounter with a sea monster comes from July
1734.
Hans Egede, a
Danish/Norwegian missionary reported that on a voyage to Gothaab/
Nuuk on the western coast of
Greenland:
:''[There] appeared a very terrible sea-animal, which raised itself so high above the water, that its head reached above our maintop. It had a long, sharp snout, and blew like a whale, had broad, large flippers, and the body was, as it were, covered with hard skin, and it was very wrinkled and uneven on its skin; moreover, on the lower part it was formed like a snake, and when it went under water again, it cast itself backwards, and in doing so, it raised its tail above the water, a whole ship length from its body. That evening, we had very bad weather.''
Other reports are known from the
Pacific,
Indian and
Southern Oceans (e.g. see Heuvelmans 1968).
A more recent development has been the mysterious "
Bloop" picked up by hydrophonic equipment since
1997. While matching the audio characteristics of an animal, it was deemed too large to be a whale. Investigations thus far have been inconclusive.
It is debatable what these modern "monsters" might be. Possibilities include
frilled shark,
basking shark,
oarfish,
giant squid,
seiches, or
whales. For example Ellis (1999) suggested the Egede-rellis-phooba monster might have been a
giant squid. Other hypotheses are that modern-day monsters are surviving specimens of giant marine reptiles, such as
ichthyosaur or
plesiosaur, from the
Jurassic and
Cretaceous Periods, or extinct whales like ''
Basilosaurus''.
In
1892,
Anthonid Cornelis Oudemans, then director of the Royal Zoological Gardens at
The Hague saw the publication of his ''The Great Sea Serpent'' which suggested that many sea serpent reports were best accounted for as a previously unknown giant, long-necked
pinniped.
It is likely that many other reports of sea monsters are misinterpreted sightings of shark and whale carcasses (see below), floating
kelp, logs or other flotsam such as abandoned rafts, canoes and fishing nets.
Alleged sea monster carcasses
Sea monster corpses have been reported since recent antiquity (Heuvelmans 1968). Unidentified carcasses are often called
globsters. The alleged plesiosaur netted by the Japanese trawler ''
Zuiyo Maru'' off New Zealand caused a sensation in 1977 and was immortalized on a Brazilian postage stamp before it was suggested by the
FBI to be the decomposing carcass of a
basking shark. Likewise,
DNA testing confirmed that an alleged sea monster washed up on
Fortune Bay,
Newfoundland in August, 2001, was a
sperm whale.
[1]
Another modern example of a "sea monster" was the strange creature washed up on the
Chilean sea shore in July, 2003. It was first described as a "mammoth
jellyfish as long as a
bus" but was later determined to be another corpse of a
sperm whale. Cases of boneless, amorphic globsters are sometimes believed to be gigantic
octopuses, but it has now been determined that sperm whales dying at sea decompose in such a way that the blubber detaches from the body, forming featureless whitish masses that sometimes exhibit a hairy texture due to exposed strands of
collagen fibers. The analysis of the ''Zuiyo Maru'' carcass revealed a comparable phenomenon in decomposing basking shark carcasses, which lose most of the lower head area and the dorsal and caudal fins first, making them resemble a plesiosaur.
Legendary sea monsters

Loch Ness Monster (Painting)
★
Capricorn, Babylonian Water-Goat, in the
Zodiac
★
Beebe's Monster
★
Charybdis, of
Homer
★
Coinchenn, from whose bone the
Gae Bulg is made in
Celtic mythology
★
Curruid, the sea monster who killed the Coinchenn
★
Iku-Turso
★
Jörmungandr, the Norse Midgard Serpent.
★
Kraken
★
Leviathan
★
Proteus
★
Scylla, of
Homer
★
Sirens, of
Homer
★
The Rainbow Fish
★
Tiamat, the constellation
Cetus
★
Yacumama, South America
Historically reported sea monsters
Sea monsters actually reported first or second hand include
★ A
giant octopus by
Pliny. N.B. Not the
giant octopus of the Pacific.
★
Mermaids
★
Sea monk
★ Various
sea serpents
★
Tritons by
Pliny
Currently reported specific sea monsters
★
Cadborosaurus, of the Pacific Northwest
★
Colossal Claude & Marvin the Monster, Mouth of the Columbia River
★
Chessie of the
Chesapeake Bay
★
Lusca
★
Morgawr
★
Ayia Napa Sea Monster , of Ayia Napa, Cyprus
see also
Lake Monsters for details of currently reported freshwater monsters.
Fictional sea monsters
★
Cthulhu, of
H. P. Lovecraft
★
Godzilla
★
Ebirah
★
Hydra
★ The
Krakens in ''
The Kraken Wakes'' by
John Wyndham
★ The Sea Monster from ''
Monkeybone''
★ The
Vensephone
★ It from
It Came from Beneath the Sea
★
Gyarados, of ''
Pokémon''
★
Seadramon, of ''
Digimon''
References
1. Carr, S.M., H.D. Marshall, K.A. Johnstone, L.M. Pynn & G.B. Stenson 2002. How To Tell a Sea Monster: Molecular Discrimination of Large Marine Animals of the North Atlantic. ''Biological Bulletin'' '202': 1-5.
★ Ellis, R. (1999) In Search of the Giant Squid. Penguin. London.
★ Heuvelmans, B. (1968) In the Wake of the Sea Serpents. Hill & Wang. New York.
★ Pliny Natural History III (Books 8 -111) (Translated by H.Rackham). Loeb. Harvard.
★
Sea Monsters That Weren't
★
"...An Alleged Plesiosaur carcass netted in 1977..."
★
Ireland Mystery Animals..."