Pijáks
Pijaks are a fictional species featured in the science fiction novel "Project Hail Mary" by Andy Weir. They are an extraterrestrial species encountered by the protagonist, Ryland Grace, during his mission to save Earth. Pijaks are described as silicon-based lifeforms, a significant departure from the carbon-based life common on Earth. Their physiology is adapted to their home world, Tau Ceti e, which has a denser atmosphere and higher gravity than Earth.
The Pijaks are characterized by their resilient, crystalline bodies and their unique method of communication. They
The species' name is a portmanteau, with "Pija" referring to a liquid substance vital for their survival