The Thargoid Probe is a mysterious alien artifact with a sleek, organic design, resembling a deep-sea creature with a metallic sheen. Its body is elongated and slightly curved, featuring smooth, flowing surfaces interspersed with glowing blue bioluminescent patterns that pulse rhythmically. The probe's surface is made of an unknown alloy, appearing both metallic and slightly translucent under certain lighting conditions, with intricate, symmetrical engravings that suggest advanced alien technology.