Biosphere: Silent Hill: Homecoming
The curious Schism has long provoked debate over its diet. Most scientists believe its head is purpose built for sifting through mud for insects and worms. Wading through shallow freshwater bodies, it is thought to be a grazer. With its stooped posture, it is perfectly designed for bottom-feeding.
Oh. It seems the Schism's diet may indeed incorporate, uh, other elements. As the scythe-like appendage opens to engulf potential prey, we see that it serves another purpose. However, this may simply be a defensive mechanism for fending off predators or competition.
Without eyes, the Schism likely has a sharp sense of smell. That, or it senses vibrations in the ground, or potentially has electroreceptors in its “snout” similar to the lateral linesof a shark.