Every ancient culture developed its own creation stories, its own gods, its own explanation for where humans came from and why the world is the way it is. This is expected. What is not expected is the degree to which civilisations that had no known contact with each other described, in specific and parallel terms, the same category of being.
The pattern that researchers in comparative mythology have been mapping for decades goes something like this. A group of beings arrives, usually from water or from the sky. They are not quite human in appearance. They bring with them a body of knowledge that transforms the receiving civilisation: farming, architecture, written language, legal codes, astronomy. They are revered, sometimes worshipped. Then they leave, or withdraw, with a promise of return.
This is not a vague similarity. The details are specific enough to raise real questions.
The Nommo of the Dogon
The Dogon people of Mali, whose astronomical knowledge we explored in our previous article, describe a race of beings called the Nommo. In their tradition, the Nommo are amphibious creatures who came from the Sirius star system. They are described as having a human upper body and a fish-like lower body. They arrived in a vessel that spun and landed with a great noise, and they brought with them the knowledge that formed the foundation of Dogon civilisation.
The Nommo are associated with water, with life, and with the transmission of sacred knowledge. They are not gods exactly, at least not in the way monotheistic traditions use that word. They are more like teachers who arrived from somewhere else.
Oannes of Ancient Sumer
Now travel to Mesopotamia, roughly 6,000 kilometres from Mali, some 5,000 years ago. The Sumerian civilisation, one of the earliest known complex societies, described a being called Oannes. The Babylonian priest Berossus, writing in the 3rd century BCE and drawing on much older Sumerian records, gave this account:
"There appeared from the sea an animal endowed with reason, by name Oannes, whose whole body was that of a fish; under the fish's head he had another head, with feet below, similar to those of a man, subjoined to the fish's tail. His voice too, and language, was articulate and human; and a representation of him is preserved even to this day. He passed the day among men; but took no food at that season; and he gave them an insight into letters and sciences, and arts of every kind. He taught them to construct cities, to found temples... and to compile laws."
Oannes, like the Nommo, was amphibious. He came from water. He taught agriculture, astronomy, written language, and law. Then he returned to the sea each night. The structural match between Oannes and the Nommo is precise enough that scholars of comparative religion have been writing about it for more than a century.
The Pattern Keeps Appearing
These are not isolated cases. The Matsya avatar in Hindu tradition is a fish deity who warns of a coming flood and preserves sacred knowledge, a description that has structural parallels with flood myths from the Dogon, the Sumerians, and dozens of other cultures. The Mayan Kukulkan and the Aztec Quetzalcoatl are feathered serpent deities who descended from the sky and taught agriculture and law before departing with a promise of return.
The Hopi people of the American Southwest describe star beings called the Kachinas who visited their ancestors and gave them knowledge. The ancient Egyptians revered Thoth, a being credited with giving humanity writing, mathematics, and medicine. Similar figures appear in Chinese mythology, in the traditions of the Aboriginal Australians, and across sub-Saharan Africa.
The common thread is not just the existence of divine or supernatural teachers. It is the specifics: knowledge transfer, the aquatic or aerial origin, the amphibious or hybrid appearance, and the eventual departure.
What to Do With This
There are several ways to approach this pattern, and none of them are without complications.
The most conservative interpretation is that the human mind, across all cultures, tends to generate similar mythological structures because it is processing similar experiences. Floods happen everywhere. Stars are visible to everyone. The need to explain the origins of civilisation is universal. Under this reading, the parallels reflect deep cognitive similarity, not shared experience.
A second interpretation takes the comparative mythology seriously as a record of actual ancient contact between cultures, whether through trade routes, migration, or cultural diffusion that we have not yet fully mapped. On this reading, a proto-story spread outward from a single source and adapted to local contexts over thousands of years.
A third interpretation, the one that makes academic institutions most uncomfortable even as it circulates widely in historical and esoteric research, is that the stories describe something that actually happened. That some form of contact, or visitation, or encounter, left a mark on civilisations across the globe, and that the mythological record is the only trace that survived.
None of these readings can be definitively proven. But the pattern exists. It is documented. And it is strange enough to deserve honest examination rather than reflexive dismissal.
The ancestors of four continents looked up, or down at the water, and described the same visitors. That is a fact. What we make of it is where the inquiry begins.