Researchers have discovered that platypus fur glows blue-green under ultraviolet light, adding another quirk to the egg-laying mammal's already unusual list of traits. Fox News reported on the finding, which emerged from a study of museum specimens.
Biofluorescence, the ability to absorb ultraviolet light and re-emit it as a visible color, is rare among mammals. The platypus joins a small group that includes opossums and flying squirrels, though the purpose of the glow remains unclear. The study's authors noted that the trait may have evolved for communication or camouflage in low-light environments.
The discovery was made while scientists were examining preserved platypus specimens under UV light, and it adds to the species' mystique, which already features a duck-like bill, webbed feet, and venomous spurs. Further research is needed to determine how widespread the trait is and what role it plays in the wild.