Tradition / Region: Estonian Mythology
Alternative names: Skull Grandfather
Category: Cow, Demon
The Myth
Kolju-taat is a guardian spirit of the sea from the coast of northern Estonia. He is especially associated with the waters near Keila-Joa and appears either as a huge bull rising from the sea or as a tall old man with a strangely shaped skull, traveling in a silver-white boat.
Although generally feared, Kolju-taat was not always hostile. He could both harm and help fishermen. It was believed that anyone who failed to offer him a sacrifice would be punished. Fish, alcohol, salt, and bread were commonly offered, often by throwing them directly into the sea. After returning home, fishermen also shared part of their catch with the poor, believing this would ensure a rich catch in the future.
Sources
Bestiary.us. (n.d.). Kolyu-taat. In New Bestiary: Encyclopedia of Imaginary Beings. Retrieved June 29, 2026, from https://www.bestiary.us/kolyu-taat