In ancient Chinese legend there is a creature called the Jiao Jing, also known as Jiaoshou. The name “jiao” is associated with the shark, and the being is said to dwell in deep waters.
It is told that the Jiao Jing is no ordinary beast of the sea, but a spirit capable of transformation. In certain accounts, the mermaid spirit can assume the form of a beautiful woman, or even that of a man. In this guise it walks among human beings, hiding its true nature beneath flawless skin and graceful form.
One tale speaks of a young woman who appeared before a household bearing sorrowful claims. She said she had been mistreated and abused by her stepmother, and a kindly couple of the Zhao family took pity on her and offered her shelter. She was quiet, strange, and unlike other women. In time it was discovered that she was not human at all, but a shark spirit in disguise.
Thus the Jiao Jing is remembered as a being of the waters who may rise from the depths wearing human beauty as a mask, moving silently between sea and shore.
In the year 1305, fishermen sailing on the open sea off the coast of Friesland made a strange capture. In their nets they found not a fish nor a beast, but a figure shaped like a man — a knight of the sea.
He appeared clad in armor, wearing a helmet as though he had come from battle beneath the waves. At first glance he seemed handsome, with a great moustache and thick flowing hair. But when the fishermen looked closer, they saw that both hair and moustache were made not of human strands, but of seaweed, tangled and dripping with saltwater.
The Sea Knight made no attempt to resist, yet neither did he speak. He refused all food and drink, answering no question and uttering no sound. Silent and unmoving, he was taken ashore and brought from town to town across Friesland, where crowds gathered to see the strange being drawn from the depths.
For three weeks he was displayed in villages and cities, a wonder of the sea and a mystery no one could explain. But he never spoke, never ate, and never gave any sign of life beyond his silent presence.
At last, in the town of Dokkum, the Sea Knight died.
And with his death, whatever secret he carried from the depths of the ocean died with him, leaving only the story of the armored man of the sea who had once been hauled from the waters and walked, briefly and silently, among the people of Friesland.
In the seas around the Orkney Islands lives a mysterious race known as the Finfolk, powerful shapeshifters who dwell beneath the waves in their hidden kingdom of Finfolkaheem. From that deep and glittering realm they rise each year in the warmer months, wading, swimming, or rowing silently to the shores of the islands in search of human captives.
The Finfolk are masters of magic and deception. They can disguise themselves as fishermen, animals, floating weeds, or drifting clothes upon the sea, drawing close to their chosen victim before suddenly seizing them. Fishermen working too far from shore, or young people wandering near the water’s edge, may be carried off in an instant and never seen again.
A captive taken by the Finfolk is forced into marriage and bound to a life beneath their rule. A man captured by a Finwife is carried to her people’s domain or sometimes to the enchanted island of Hildaland, where he must remain forever as her husband and servant. A woman taken by a Finman becomes his unwilling bride, doomed to live in fear of his temper and magic.
The Finman is said to be tall and gaunt, with a stern and gloomy face. He commands strong enchantments: he can cross the sea between Norway and Orkney in only a few strokes of his oars, hide his vessel from sight, and summon phantom fleets upon the waves. He fiercely guards the waters he claims as his own, wrecking the boats of those who intrude. Yet he is said to fear the sign of the cross, and some fishermen would mark it secretly on their boats for protection.
The Finwife begins her life as a creature of striking beauty, often appearing as a golden-haired mermaid with a voice as enchanting as any siren’s. She seeks a human husband, for only by marrying a man of the land can she keep her beauty. If she fails, she must wed a Finman, and from that time she grows steadily uglier, forced to labor and send her earnings back to her husband. Some tales say she keeps a black cat that can change into a fish and carry messages to her kin beneath the sea.
The Finfolk possess two homes. In winter they dwell in Finfolkaheem, a vast underwater palace lit by the glow of sea creatures, its halls hung with drifting curtains of weed and surrounded by gardens beneath the waves. In summer they travel to Hildaland, a magical island hidden by mist or lying just beneath the surface of the sea, where the stolen men and women live out their lives in captivity.
Because the Finfolk prize silver above all things, some say that a victim may escape by throwing coins into the water, distracting the creature long enough to flee. Yet many are not so fortunate, and the old stories warn that once a Finfolk hand has closed upon you, the sea will claim you forever.
Thus the Finfolk are remembered in Orkney lore not as gentle sea-folk, but as dark masters of the deep— shapeshifters of the tide, hunters of human brides and grooms, and rulers of a hidden kingdom beneath the waves.
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Sources
Wikipedia contributors. (n.d.). Finfolk. In Wikipedia, The Free Encyclopedia. Retrieved February 14, 2026, from https://en.wikipedia.org/wiki/Finfolk
In the rivers, lakes, and waterfalls of the northern lands lives a spirit known by many names—the Nixie. It is a being of the water, ancient and changeable, sometimes seen as a man, sometimes as a creature, and sometimes not seen at all until it is too late.
Most often the Nixie appears as a beautiful young man seated beside a brook or on a rock in the rapids. There he plays music—usually on a violin, though sometimes on a flute or horn. The melody is so enchanting that anyone who hears it feels compelled to follow. Women, children, and wandering travelers drift closer to the sound, stepping into the water without realizing it, until the river closes over them and they vanish beneath the surface.
At times the spirit is not cruel, only lonely. Some stories tell of people who approached him with offerings—drops of blood, drink, or tobacco—and in return he taught them music so powerful that trees swayed and waterfalls seemed to pause. Yet even in such tales, the Nixie never leaves the water for long, and sooner or later he returns to the stream that is his true home.
Because the Nixie is a shapeshifter, he does not always appear as a man. He may become a horse standing beside a stream, inviting riders onto his back before plunging into the water with them. He may appear as floating treasure, driftwood, or some harmless animal near the bank. In all these forms he draws people closer to the water’s edge.
There are also tales in which he takes a human lover, living for a time among people. But these unions never last. The Nixie cannot live long away from flowing water, and he always returns to the river, leaving the human world behind.
In some regions it is said that before a drowning occurs, the Nixie cries out at the place where it will happen. Those who hear the call know that the water is about to claim a life.
Thus the Nixie remains in the folklore of the north: a musician in the rapids, a shadow beneath the lake’s surface, and the unseen hand that waits in deep water.
Sailors in the northern seas told of a strange being that appeared only when storms were near.
It was called the margyg.
Those who saw it said it rose from the sea like a woman from the waist up, but vast and unsettling in form. Its chest was heavy, its arms long, and its hair streamed down wet over its shoulders. Its head and neck resembled those of a human, yet its face was coarse and fearsome, with a wide mouth, heavy cheeks, and a low brow. Its hands were large, and the fingers were joined together by webbing like the feet of seabirds.
Below the waist, it was wholly a fish, covered in scales with fins and a powerful tail.
The margyg was said to appear rarely, and almost always before a great storm. Sailors would spot it rising above the waves, holding a fish in its hands.
If it swam toward a ship, tossing the fish toward the vessel or playing with them as it approached, the crew believed disaster was coming and feared they would not survive the storm.
But if the margyg ate the fish, or threw them away from the ship and turned aside, the sailors took heart. Though the storm might still strike, they believed they would live through it.
For this reason, the margyg was not merely a monster of the sea, but a sign — a creature whose brief appearance foretold the fate of those who sailed beneath the darkening sky.
Along the wide waters of the Mekong River, people speak of a being who rises when evening falls and the river turns to silver under the moon.
She is called Haan Phaayaan.
Fishermen say that on quiet nights, when the current slows and the air grows heavy, a figure can sometimes be seen rising from the dark water. She appears as a beautiful woman of the river, her form half human and half aquatic, her hair wet and shining as she sits upon rocks or drifts near the shore.
Those who see her are said to feel a strange pull toward the water. Travelers resting by the banks, and fishermen alone in their boats, have told of hearing a soft voice or song carried over the river’s surface. Some follow the sound, thinking it comes from another person nearby, only to find the river empty.
Others say the Haan Phaayaan watches silently, slipping beneath the water if approached, leaving only ripples behind.
For this reason, many along the Mekong treat the river with caution after sunset. For while the water gives life and food, it is also the home of the unseen — and on certain nights, the Mekong Mermaid is said to rise once more from the depths, watching those who pass along her river.
On the quiet shores of Little Exuma lies a small beach known as Pretty Molly Bay. The sand there is pale and soft, and the water lies calm, but the place carries an old story the island has not forgotten.
Long ago, there lived a young woman called Molly. Some say she was enslaved and suffered greatly in life. One night she drowned in the waters of the bay, and after her death her spirit did not leave the place.
In one telling, Molly returned as a ghost. People claimed that on certain nights a woman could be seen walking along the shore, pale in the moonlight, wandering the beach where she died. Those who glimpsed her said she moved silently, as if still searching for something lost.
In another telling, Molly did not remain a ghost. Instead, the sea took her and changed her. She rose again from the water as a mermaid, young and beautiful, living beneath the waves of the bay. Fishermen and villagers said she could sometimes be seen in the water at dusk, watching from the shallows before slipping back into the deep.
To this day, the bay carries her name, and some who pass along the quiet beach still watch the water at sunset, wondering whether the figure they glimpse is only the light on the waves — or Pretty Molly herself, still lingering where land and sea meet.
Among the Slavs it was said that not all restless spirits wander by day. Some belong to the deep hours of night, when the world is quiet and the living are most vulnerable. One such being was the Północnica — the Midnight Woman.
She was believed to be born from the soul of someone who had lived in great sin, or from a person who had suffered terrible wrongs in life. Such a soul, unable to find peace after death, might return as a malicious spirit. Some said a person could even become such a being while still alive, if their heart was consumed by powerful hatred, grief, or bitterness.
There were darker whispers too. It was said that if, during baptism or on a deathbed, the words of prayer were spoken wrongly, the mistake could doom a soul. A slip of the tongue might bind it to wander as a Północnica.
She was a creature of midnight. When the hour was deepest and the world lay still, she would move unseen through houses and villages. Her nature was not always murderous, but she was spiteful and fond of mischief. She troubled sleepers, stirred unease, and spread fear in the dark hours when no one wished to meet what walked outside.
Thus people spoke her name carefully, knowing that some spirits belong not to the grave, but to the hour when the night is at its blackest.
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Sources
Wikipedia contributors. (n.d.). Północnica. In Wikipedia, The Free Encyclopedia. Retrieved February 14, 2026, from https://pl.wikipedia.org/wiki/P%C3%B3%C5%82nocnica
In the lands of the Bakongo it is said that the waters are not empty. Rivers, springs, and pools are watched by spirits called Simbi, beings who belong to both the world of the living and the unseen realm beyond it.
They dwell where water meets earth—at riverbanks, deep pools, waterfalls, and hidden springs. Some appear as beautiful water people like mermaids, rising from the surface with shining skin and long hair. Others take the form of snakes, flashes of fire, or shapes glimpsed only for a moment in clay, gourds, or rippling water. Wherever they dwell, the place becomes sacred.
Those who respect the Simbi may receive their favor. The spirits are said to guard the balance of nature, to protect the land, and to guide those who approach them with reverence. Sometimes they reward a person with wealth or protection, drawing treasures from the depths of the water or revealing hidden paths to fortune.
Stories tell of people who encounter a Simbi beside a river and return with gold, blessings, or healing. But the spirits are not to be taken lightly, for they belong to an older order of the world and must be treated with care.
When the people of Central Africa were carried across the ocean, the Simbi were said to travel with them. In distant lands, the spirits were still believed to live in rivers and marshes. Among the Gullah Geechee people, one tale tells of a girl named Sukey who meets a mermaid called Mama Jo. The water spirit protects her and gives her gold, just as the Simbi were said to bless their followers in the old homeland.
So the Simbi remain—guardians of water, keepers of hidden riches, and watchers at the boundary between this world and the next.
Tradition / Region: Scottish Mythology Alternate Names: Selkie folk, Seal folk, Haaf-fish (large seals in folklore) Category: Mermaid, Shapeshifter
The Myth
Along the coasts of the Northern Isles it is said that certain seals are not animals at all, but selkie folk—beings who live as seals in the sea and as humans when they shed their skins upon the shore. On quiet nights they come out of the water, remove their seal hides, and dance in human form under the moon.
Many tales tell of men who find one of these skins and hide it. When the selkie woman returns and cannot find her seal coat, she is trapped on land. The man forces her to become his wife, and though she lives with him and may bear his children, her heart is always with the sea. She spends her days gazing toward the waves, longing for the place she came from.
Years may pass this way, until one day she discovers the hidden skin—sometimes by chance, sometimes with the help of a child who unknowingly reveals its hiding place. The moment she touches it, she runs to the shore, puts it on, and slips back into the water. However much she loved her children, she does not return. Some say the children later see a great seal watching them from the sea, crying out softly as if in farewell.
There are also stories of male selkies. In human form they are said to be strikingly handsome and dangerously charming. They come ashore to seek out lonely women, especially those whose husbands are long at sea. A woman wishing to summon one might weep into the ocean, and the selkie would rise to her. From such unions children might be born, sometimes marked by webbing between their fingers or toes.
Other tales speak of seals that are killed by fishermen, only for their bodies to change into human form. Without their skins, these seal-people cannot return to their underwater homes. In one story, a stranded fisherman is carried safely back to shore by a grieving selkie in exchange for the return of a stolen skin, for without it the creature could never go back to the sea.
Thus the selkie folk are remembered as beings of two worlds—living in the deep, walking the shore in borrowed human shape, and forever drawn back to the water that is their true home.
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Sources
Wikipedia contributors. (n.d.). Selkie. In Wikipedia, The Free Encyclopedia. Retrieved February 14, 2026, from https://en.wikipedia.org/wiki/Selkie