Sh'g'th tissue is a formless substance used to create unholy life.
According to legend, following the Great Cataclysm that sank in the oceans both Atlantis and Deviant Lemuria in 18,000 BC, "beings from the stars", the Great Old Ones. Dormant for eons, they awoke when some of Atlantis' humans returned to the seas as water-breathers) created the first Aqueos from Sh'g'th tissue.
- The Sh'g'th tissue is a clear reference to the Shoggoths, formless servants created by the Elder Things, mentioned in some of H.P. Lovecraft's works.