# The Con Rit, a giant armored sea serpent reported off Vietnam, is an undiscovered marine animal awaiting scientific recognition

**No verdict.** There is a real documented tradition here: coastal Vietnamese accounts of a huge, segmented sea creature called the con rit (Vietnamese for millipede), anchored by an 1883 report of a decapitated, armor-plated carcass on a beach at Hongay in Along Bay. That folklore, and its later adoption by cryptozoologists Armand Krempf and Bernard Heuvelmans, is genuine. The claim we rate is narrower: that a specific, still-living species of giant armored animal exists behind these reports. No specimen, skeleton, tissue sample, or clear photograph has ever been produced; the 1883 carcass was reportedly towed back out to sea, and Heuvelmans's proposed identity was a hypothetical animal with no fossil support. On the evidence, the literal-creature claim is unproven, neither confirmed nor conclusively ruled out.

Category: Cryptids & Monsters · Era: 1880s–present · First circulated: The core account dates to an 1883 carcass reported near Hongay in Along Bay (modern Ha Long Bay), Vietnam; it entered Western cryptozoological literature in the 1920s through Dr. Armand Krempf and was popularized by Bernard Heuvelmans in the 1960s · Believed by: A niche cryptozoology readership following Heuvelmans's classification of sea serpents, along with folklore enthusiasts; the con rit has little presence in mainstream marine biology
URL: https://theconspiratory.com/theory/con-rit

## Summary
The con rit, from the Vietnamese word for millipede, is a sea creature reported off the coast of Vietnam and described as a gigantic, segmented, armor-plated animal resembling a centipede. The tradition rests largely on a single vivid account: in 1883 a decapitated carcass, said to be roughly 18 meters long with jointed plates that rang like sheet metal when struck, reportedly washed ashore near Hongay in Along Bay and was so foul that locals towed it back out to sea. In the 1920s the French oceanographer Armand Krempf documented the story, and in his 1968 survey In the Wake of the Sea-Serpents the zoologist Bernard Heuvelmans built the con rit into a whole category, his many-finned sea serpent, and gave it a hypothetical scientific name. This case file keeps two things apart: the documented folklore and reports, which are real; and the claim it rates, that a literal undiscovered species lies behind them. No physical specimen has ever been secured, and the leading naturalistic explanations point to misread decomposition of known marine animals.

## The claim
That a real, still-living species of giant segmented, armored sea animal exists off Southeast Asia, matching the con rit of Vietnamese report, and that mainstream science has simply failed to collect and describe it.

## Origin and timeline
- c. 200s: The Roman author Aelian writes of enormous marine centipedes in his natural-history compilations. Centuries later this ancient image supplies cryptozoologists with the label they attach to segmented sea-serpent reports, and even the Latin epithet later given to the con rit nods to Aelian.
- 1883: A decapitated carcass reportedly washes ashore near Hongay in Along Bay (modern Ha Long Bay), Vietnam. The account, associated with a local man named Tran Van Con, describes a body about 18 meters long and roughly a meter wide, formed of jointed, armored segments that rang like metal when struck. The head is missing; the remains stink so badly that they are towed back out to sea rather than kept.
- 1921: Dr. Armand Krempf, a French naturalist working in Indochina, records and conveys the 1883 con rit account, giving the story its first careful documentation in the scientific literature.
- 1920s: As founder and director of the Oceanographic and Fisheries Service of Indochina, Krempf treats the con rit as a plausible zoological subject worth collecting and describing, lending the folklore a measure of institutional attention.
- 1965: Bernard Heuvelmans publishes his French survey of sea-serpent reports, later issued in English in 1968 as In the Wake of the Sea-Serpents, sorting the accounts into nine proposed types.
- 1968: In the English edition Heuvelmans names one of those types the many-finned sea serpent and assigns it the hypothetical binomial Cetioscolopendra aeliani, Aelian's centipede whale, proposing a surviving armored archaeocete (an ancient whale lineage) as its identity. The 1883 con rit is his keystone case.
- Late 20th c.: Paleontologists note that armored scales once associated with certain fossil archaeocetes did not belong to those whales, and that no armored archaeocete is verified in the fossil record, undercutting the biological basis Heuvelmans had proposed for the type.
- 2014: The zoologist Karl Shuker revisits the con rit, arguing that if anything real underlies the many-finned reports it is more likely a giant crustacean than a whale; the cryptozoologist Michael Woodley separately floats an invertebrate reading. No new physical evidence accompanies either revision, and no specimen has ever been recovered.

## The evidence, claim by claim
- Claim: A genuine 60-foot segmented, armor-plated carcass washed ashore at Hongay in 1883, proving a real animal.
  Evidence: The case rests on a secondhand account with no surviving physical evidence. The reported carcass was, by the story's own telling, towed back out to sea; no bones, tissue, measurements taken by a naturalist, or photographs were preserved. The report reached the scientific literature decades later, through Krempf in the 1920s. A single unretained, undocumented carcass is an anecdote, not a specimen.
- Claim: Jointed plates that rang like sheet metal describe an animal unlike anything known, so it must be a new giant species.
  Evidence: Large marine animals decompose into strange, misleading shapes. A rotting whale or shark can shed soft tissue to expose a segmented-looking skeleton, and decaying basking sharks in particular are a documented source of monster carcasses, losing the head and fins first to leave serpentine, ridged remains. Such globsters routinely fool onlookers before laboratory tests identify a familiar animal.
- Claim: Heuvelmans classified the con rit scientifically as Cetioscolopendra aeliani, so it has a place in zoology.
  Evidence: That name labeled a hypothesis, not a described specimen. Heuvelmans proposed a surviving armored archaeocete purely as a candidate explanation; there is no armored archaeocete verified in the fossil record, and scales once linked to fossil whales were shown to belong to other creatures. A binomial attached to a conjecture does not establish that an animal exists.
- Claim: Repeated coastal reports over generations point to a real animal that science has overlooked.
  Evidence: A documented folklore tradition is real as folklore; it is not the same as a biological type specimen. Eyewitness memory, retelling, and the naming of a familiar sea hazard can sustain a tradition indefinitely without any undiscovered species behind it. Formal recognition in zoology requires physical material that can be examined, which the con rit has never furnished.
- Claim: The con rit could be a surviving giant arthropod, perhaps a relative of the ancient Arthropleura.
  Evidence: Arthropleura was a land-dwelling millipede relative that went extinct roughly 300 million years ago, with no known marine descendants. Invoking it requires an unbroken but entirely unrecorded aquatic lineage across that gulf of time. The idea is speculative reconstruction from a single carcass story, not an inference supported by any fossil or living evidence.

## Why people believe it
- The 1883 account is unusually vivid and specific, right down to the segments ringing like metal, and concrete sensory detail reads as credible even when it cannot be checked.
- Credentialed figures took it seriously. A working oceanographer, Krempf, documented the story and a respected founder of cryptozoology, Heuvelmans, built a whole category and a Latin name around it, which lent the report an air of scientific standing.
- The deep ocean genuinely still yields surprises. Large marine animals are described anew from time to time, so the general premise that something big remains uncatalogued is not absurd, which makes a specific unknown feel plausible.
- Real globster carcasses are genuinely baffling at first sight. People who have seen strange, half-rotted remains on a beach know the confusion firsthand, and that lived experience makes an exotic explanation feel earned.
- The name itself carries weight. A creature with a Vietnamese folk name and a scientific-sounding binomial seems already half-catalogued, as though only the final capture were missing.

## Open questions
- What actually washed ashore near Hongay in 1883 cannot now be determined, since the carcass was not kept; the plain answer is that the specific object is simply unrecoverable.
- Whether the con rit folk name maps onto one recurring misidentification (a particular decomposing shark or whale) or is a loose label applied to several unrelated strandings remains unclear from the surviving accounts.
- Which known species' decomposition best reproduces the segmented, sheet-metal description is a fair natural-history question that has not been settled in detail for this case.

## Sources
- Contemplating the Con Rit, ShukerNature (Dr. Karl Shuker) (2014): https://karlshuker.blogspot.com/2014/02/contemplating-con-rit.html
- What Are The Con Rít?, Cryptomundo (2013): https://cryptomundo.com/cryptozoo-news/con-rit/
- The Cryptid Zoo: Con Rit, newanimal.org: http://www.newanimal.org/conrit.htm
- Many-finned sea serpent, Encyclopaedia of Cryptozoology: https://cryptidarchives.fandom.com/wiki/Many-finned_sea_serpent
- Zuiyo-maru carcass, Wikipedia: https://en.wikipedia.org/wiki/Zuiyo-maru_carcass
- Blob-Like Sea Monster Washes Up on Maine Beach. But It's Not a Whale!, Live Science (2018): https://www.livescience.com/63119-sea-monster-is-basking-shark.html
- Basking Shark: Cetorhinus maximus, Florida Museum of Natural History: https://www.floridamuseum.ufl.edu/discover-fish/species-profiles/basking-shark/

Rated by The Conspiratory, a neutral, sourced encyclopedia of conspiracy theories. Full page: https://theconspiratory.com/theory/con-rit