Japanese Cryptids
A Japanese town once offered 200 million yen for one snake. A temple still shows a thunder-beast's mummy. Here are the creatures Japan says it has seen, with what each left behind.
A cryptid is a creature people say they have seen, but nobody can prove. Bigfoot is one. Japan has its own, and they are strange in two ways.
First, many of them started as yokai. The tsuchinoko, Japan's most famous cryptid snake, has a yokai ancestor: the nozuchi, a hammer-shaped snake written down in 1283. The old monster never left. It just moved from old books to the evening news.
Second, Japan kept bodies. Temples hold mummies of thunder-beasts and mermaids. Zoos have put white puffs in display cases. In 2022, scientists put one mermaid mummy through a CT scan. It was made of cloth, paper, fish skin and hair.
Below, they are sorted by what they left behind: a reward, a body, a news report or a rumor. Proof is the one thing none of them left.
We only list a yokai here if its own page records a sighting, a body or a report people treated as real. Each page names the oldest source we found.
Wanted: a reward and no body
Towns have offered cash for one since 1989. No specimen has ever turned up.
Bodies you can still see
A thunder-beast mummy in a temple, mermaid mummies, and white puffs in a zoo case.
Raiju
雷獣The beast that rides the lightning down — in some tellings tearing apart the tree it lands in.
swift
Ningyo
人魚A Japanese merfolk—part human, part fish—whose flesh grants immortality to whoever eats it.
mysterious
Kesaran-pasaran
A white puff that drifts through the air. Keep it in a paulownia box and feed it face powder, and it brings luck.
benevolentReported as real events
Court records, Edo news sheets and scholars' notes wrote them down as fact.
Nue
鵺A chimeric night beast: monkey's face, tiger's limbs, snake for a tail.
ominous
Kappa
河童A mischievous, turtle-like river imp with a water-filled dish on its head.
mischievous
Amabie
アマビエA three-legged, beaked mermaid-like being that rises from the sea to foretell and ward off epidemics.
benevolent
Kudan
件A human-faced calf that is born, speaks a true prophecy of coming disaster, then dies.
ominousModern rumors: TV and the internet
From a 1990 tabloid photo to a 2003 message-board post.
Jinmenken
人面犬A dog with a man's face that outruns cars on the highway and tells people to leave it alone.
mischievous
Jinmengyo
人面魚A carp in a temple pond whose markings looked like a human face, and the 1990 media storm that made it famous.
harmless
Kunekune
A white thing writhing far out in the rice field on a windless day; look at it long enough to understand what it is and you stop being able to think.
eerie