Mermaids Across Cultures: How Every Civilization Independently Invented the Same Creature

Here is something that should probably get more attention than it does. Ancient Syria, ancient Greece, ancient China, ancient Japan, West Africa, Scotland, and indigenous cultures across the Americas all independently came up with the same creature. Half human, half sea animal, living in the water, connected to fate, danger, beauty, or all three at once.

They didn’t borrow from each other. The timelines don’t allow for it. The specifics differ wildly. And yet something about living near the ocean kept pushing human imagination toward the same basic figure, over and over, for thousands of years.

The Oldest One: Atargatis of Ancient Syria

The earliest documented mermaid figure comes from ancient Assyria, around 1000 BCE. Her name was Atargatis, and she wasn’t just a sea creature. She was a goddess.

The story goes that Atargatis was a powerful goddess who fell in love with a mortal shepherd. She accidentally killed him, possibly with the intensity of divine love, which was apparently a hazard in Assyrian mythology. Overcome with grief and shame, she threw herself into a lake. The water refused to fully transform her. Her divine upper half stayed human while her lower half became a fish.

Archaeologists found coins depicting her in this form. She became a fertility goddess, a protector of her people, and a figure of enormous religious significance across the ancient Near East. Her worship later merged with Greek and Roman traditions.

What’s interesting about Atargatis is how different her story is from the passive, beautiful mermaids of later European tradition. She was divine first. The sea creature part was a consequence, not a definition.

The Greek Version: Sirens and Sea Nymphs

Greek mythology had multiple takes on the sea creature concept, and none of them started out as fish-women.

The Sirens were originally bird-women. They had wings, not tails, and they lured sailors to their deaths with singing. At some point, after losing a singing competition with the Muses, they lost their feathers and ended up in the ocean. Whether they died or transformed depends on which version you read. The Romans later settled on the fish-tail version, and that became the dominant image going forward.

Separate from the Sirens, Greek mythology also had Nereids and sea nymphs, who were more straightforwardly associated with water and often depicted with fish attributes.

What Greek mythology contributed to the overall mermaid tradition was the idea of the dangerous beautiful woman near the water. The sea as a space of desire and death simultaneously. That framework stuck.

Japan’s Ningyo: Nothing Like What You’re Imagining

The Japanese mermaid, the ningyo, looks nothing like Ariel. The ningyo, which translates directly to “human fish,” was described in early texts as having the face of a monkey, small fish-like teeth, golden scales, and a voice like a flute or a skylark. Not a beautiful woman. Something stranger and more unsettling.

A ningyo washing ashore meant disaster. War, floods, calamity. Fishermen who caught one in their nets threw it back immediately. The creature carried bad fortune with it just by showing up.

The flesh was another matter entirely. Eating a ningyo supposedly granted immortality, which sounds like a good deal until you read the stories about what that immortality actually looked like. The most famous is the tale of Yao Bikuni, a girl who accidentally ate ningyo flesh at her father’s dinner table. She stopped aging after reaching adulthood and lived for eight hundred years. She watched everyone she ever loved grow old and die, over and over. Eventually she became a Buddhist nun and lived out her remaining centuries in a cave, seeking some kind of peace.

Mami Wata: The African Water Spirit

Across West and Central Africa, and throughout the African diaspora in the Caribbean and South America, the water spirit known as Mami Wata occupies a role that Western mermaid mythology doesn’t quite have a parallel for.

Mami Wata, whose name means “Mother Water,” is depicted as a beautiful woman with serpentine or fish-like features. She brings wealth and beauty to those who honor her. She brings disaster to those who don’t. Her followers enter into spiritual relationships with her, and she appears in dreams, demanding devotion and offering protection in return.

What makes Mami Wata particularly interesting is how she travels. Scholars trace her origins to early encounters between West Africans and European sailors in the 15th century, when images of European mermaids arrived on the continent through trade goods. West African communities absorbed those images and merged them with existing water deity traditions, creating something new. Mami Wata then traveled with enslaved Africans to the Caribbean and the Americas, where she became part of Vodou, Santería, and Candomblé traditions.

She is simultaneously ancient and relatively recent. A water deity who crossed an ocean and kept transforming.

The Selkies of Scotland and Ireland

Scottish and Irish selkies are technically different from mermaids in that they’re seal-people rather than fish-people. The mechanism matters to the mythology. Selkies don’t have permanent fish tails. They’re seals in the water who shed their skins to become human on land.

The core selkie story involves a fisherman stealing a female selkie’s seal skin while she’s on shore. Without the skin she can’t return to the sea. He marries her, she raises children with him, she loves them genuinely, and she never stops longing for the water. One day the children find the hidden skin. She takes it back and swims away, sometimes looking back, sometimes not. That story is devastating in a specific and quiet way that most mermaid stories aren’t.

One interesting theory about selkie origins involves actual misidentification. Scottish folklorist David MacRitchie suggested that early Scottish settlers may have encountered Sami and Finnish women wearing sealskin kayaks and clothing, and misread what they saw as transformation between human and seal. The sealskin comes off, and suddenly you have a person where a seal appeared to be.