An extremely fragile, rough-to-the-touch artifact whose surface is often mistaken for metallic. Scientists explain that the appearance of the Phlegm is associated with material degradation, likely due to the complete destruction of bonds between the organic molecules of the substance. At present, the exact mechanism by which the artifact manages to maintain its structure despite the complete destruction of most molecular bonds is unknown. However, the flora and fauna department at Research Institute 7 believes it may occur due to the life processes of yet undiscovered microorganisms.