The Canastran two-headed tortuce is one of few surviving multi-brained creatures to be found in the Core region of the galaxy. These slow-moving but very intelligent creatures are the principal form of amphibian life found in the coastal oceans of Canastra IV. Little is known concerning these creatures, several varieties of which have already been identified. Some are deep-diving sea dwellers that live off underwater plant life. Others are land-dwellers who return to the sea when local roots and other edible plants in a given region are exhausted.
Lacking any known natural predators, tortuces are believed to be long-lived creatures with lifespans approaching an average of 100 years. All tortuces contain a primary brain in each neck-like appendage, and a thin, ancillary brain stem leading back to a primary nervous system nexus (which lies under the protection of the creature's shell). While the inner workings of this nexus are as yet unknown, it is suggested that the shell's nexus membranes may act in some manner as a controller or data "sifter" that manages what might otherwise be conflicting impulses from the two, independent primary brain centers.
This inoffensive creature is seen as a culinary delicacy throughout the Core. As such, thousands are harvested as a gourmet food source and shipped throughout the galaxy each year. Such hunts are made all the easier for the tortuces are social creatures that typically travel in large herds. Efforts to ban this harvesting have proven ineffective. | 
