According to some stalkers, the small appendages covering the Prima are somewhat like legs or antennae, but the scientists at Research Institute 7 claim that these formations are closer in their cellular structure to root hairs of small shrubs common in the Zone. The outer shell of the artifact, resembling stone, is not made of rock, but primarily of organic chitin. This supports those who consider Prima more akin to some living larva than to an artifact.
Additional stats