Crab

Kani Musume

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Tradition / Region: Japanese Mythology
Alternate Names: Crab Girl
Category: Mountain dweller, Crab, Yokai

The Myth

In the late eighteenth century, during the lively days of Edo, crowds gathered in the Asakusa district to see strange and curious spectacles. Among them was a young girl known as the Kani Musume—the Crab Girl. She was said to have only two fingers on each hand, and this unusual trait earned her fame. People came not because she performed any special skill, but simply to look upon her rarity, and her name became well known among the curiosities of Asakusa.

As the years passed and fashions changed, the popularity of such shows faded. In later tales, the Crab Girl’s story took on a darker, more fantastical turn. She was said to have been gathered up by a demon woman who had withdrawn from human society and fled into the remote mountains of Tamba. This demon girl, bitter over her own failures and humiliation, surrounded herself with others like the Crab Girl—along with a Cat Girl, a Heron Girl, a Bear Girl, and a Snake Girl.

Together, these strange women would sit and speak ill of human women, mocking their beauty, their manners, and their lives. The demon girl dreamed of returning to the human world as a terrifying monster, one that would inspire fear instead of ridicule. But when she saw a beautiful human woman named Omiwa, whose face twisted into something truly dreadful from jealousy alone, the demon girl was overcome with fear. Realizing that human emotions could be more frightening than any monster’s form, she fled back into the mountains, abandoning her ambition.

Thus, the Kani Musume remained in legend as a figure caught between spectacle and myth—first a curiosity of the city, later a companion of outcasts and half-monsters—her story reflecting how fascination, cruelty, and fear can transform ordinary lives into something strange and unsettling.

Gallery

Sources

TYZ-Yokai Blog contributors. (n.d.). カニ娘 (Kani Musume). In TYZ-Yokai Blog, from https://tyz-yokai.blog.jp/archives/1052020047.html

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Ishigani

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Tradition / Region: Japanese Mythology
Alternate Names: Stone Crab; Crab Stone; Finger-Eyed Stone Crab
Category: Mountain dweller, Crab

The Myth

The tale of Ishigani begins not with a named monster, but with a series of unsettling events that followed a reckless act. In Bingo Province, a sixteen-year-old samurai youth named Inō Heitarō took part in a test of courage on Mount Hikuma together with his neighbor, Mitsui Gonpachi. After that night, strange disturbances began to plague Heitarō’s home, as if something unseen had followed him back from the mountain.

On the night of July fifth, while Heitarō and Gonpachi were talking inside the house, a heavy stone suddenly burst into the room. It was no ordinary rock. Before their eyes, it sprouted thick, finger-like legs and began to crawl across the floor with disturbing speed. From its surface glared eyes like those of a crab, fixed upon the young men with hostile intent. The creature’s movement was vigorous and purposeful, as though the stone itself had been given will and malice.

Gonpachi drew his sword, ready to strike the crawling stone, but Heitarō stopped him. Whether from fear, restraint, or a sense that violence would only worsen matters, no blow was struck. The stone creature continued its threatening display before vanishing, leaving the house shaken and the boys helpless.

When morning came, the terror seemed to have passed. In the kitchen lay a large stone, inert and ordinary once more. It was recognized as a familiar object from the neighborhood—either a car-stopper stone or a heavy stone used for pressing pickles. Whatever force had animated it during the night had withdrawn, leaving behind only the mundane shell of what had briefly become something monstrous.

The creature itself was never given a fixed name in the original account. Later retellings and illustrations began to call it Ishigani, likening it to a crab formed of stone. In picture scrolls and books, it is often shown as a rock covered in many eyes, scuttling forward on thick, finger-like limbs; in other depictions, it has only two bulging eyes, making its crab-like nature more pronounced.

Ishigani stands as a reminder of a common theme in Japanese folklore: that ordinary objects can be temporarily possessed or transformed by unseen forces. What appears lifeless by day may awaken by night, not as a true beast, but as a manifestation of fear, consequence, or something disturbed beyond human understanding.

Gallery

Sources

TYZ-Yokai Blog contributors. (n.d.). 石蟹 (Ishigani). In TYZ-Yokai Blog, from https://tyz-yokai.blog.jp/archives/1052490476.html

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Kebō

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Tradition / Region: Japan Mythology
Category: Yōkai, Crab

The Myth

Kebō is a strange yōkai said to have appeared in the fields of Hama in Satsuma Province. It is described as being about the size of a four- or five-year-old child, small but unsettling in form.

Its body is covered in red hair, giving it a wild, unkempt appearance. Kebō has a human-like head and torso, with two arms and four legs, each ending in black, sharp, claw-like tips. Around its waist, thick hair hangs down like a coarse skirt.

Although it resembles a small humanoid, Kebō is also compared to an aged ebi-gani, a creature likened to a shrimp or crab that has lived far beyond its time. This gives it an uncanny, half-human, half-creature quality.

Kebō is said to feed on small fish. It does not cry out or speak, remaining silent at all times. When encountered by people, it does not attack. Instead, it is described as smiling quietly, watching without expression or sound.

Because of its silence, its strange smile, and its unnatural form, Kebō is remembered not as a violent yōkai, but as an eerie presence—one that appears briefly, observes, and disappears without explanation.

Gallery

Sources

TYZ-Yokai Blog contributors. (n.d.). 化け物屋敷のうわさ (Bakemono-yashiki no Uwasa). In TYZ-Yokai Blog, from https://tyz-yokai.blog.jp/archives/1077511760.html

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The Gebaro Crab

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Tradition / Region: Papua New Guinea Mythology
Alternate Names: —
Category: Crab, Sea Dweller

The Myth

Near the village of Gebaro there once lived a monstrous crab, feared by all who knew of it. Its body was enormous, and its shell was as hard as solid stone.

The people tried many times to destroy the creature. They shot arrows at it and struck it with clubs, but every weapon failed. Arrow points shattered, and blows rang out uselessly against its armored shell. No wound could be made, and no crack appeared.

Because the crab could not be harmed, the people learned to avoid the place where it lived. It remained there, undefeated and unchallenged, a living proof that some beings cannot be overcome by human strength.

The Gebaro crab became a symbol of invulnerability—an enemy not meant to be slain, but endured and respected from a distance.

Gallery

Sources

Landtman, G. (1970). The Kiwai Papuans of British New Guinea: A nature-born instance of Rousseau’s ideal community.

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The Gigantic Crab of Aibinio

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Tradition / Region: Papua New Guinea Mythology
Alternate Names: —
Category: Crab, Sea Dweller

The Myth

Near Aibinio there was once a small island where the Wiorubi people found an enormous crab, far larger than any ever seen before. Its shell was vast, its claws powerful, and it stood unmoving as men and women gathered around it.

Believing it could be captured, several people approached together. At that moment, the crab suddenly opened one of its great nippers. With terrifying speed, it seized the hands of those closest to it and dragged them into the lagoon. None could break free.

As the people were pulled under, the creature stirred the water with immense force. The lagoon began to spin, churning faster and faster until the water rose and roared. The island itself was torn apart and washed away, swallowed by the whirling waters. When the storm of water finally ceased, nothing remained of the island. Only a deep whirlpool marked the place where it had once stood.

The gigantic crab still dwells there beneath the surface. At every high tide, the water twists and surges in a powerful eddy, just as it did on the day the island vanished. The people say the creature is not a true crab, but an or or dr or a—a mysterious and dangerous being whose form only resembles an animal.

To this day, the waters near Aibinio are treated with fear and caution, for the crab waits below, and the sea still remembers its strength.

Gallery

Sources

Landtman, G. (1970). The Kiwai Papuans of British New Guinea: A nature-born instance of Rousseau’s ideal community.

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