The Comendenti lived just beneath the surface, eating tree roots and, in the night, grasses on the surface. This all changed when there was a flash flood that contaminated the water near the surface. The tainted water killed off and made poisonous the grasses and tree roots as well as their water supply. The Comendenti burrowed down deeper into the earth and found other water sources deeper in the earth in deep underground streams. Because they were cut off from their normal food source, the Comendenti began to turn to grubs and worms deep within the earth. Their eyes became more blind over time and they nearly completely cut themselves off from the surface, becoming a bit more serpentine and more blind.