1793. Desert Nature

"Those aren't flies, are they?" The small tan thing that one of the archers made out was definitely a fly. But what had stopped him and made everyone gather toward the sight was that the fly was easily the size of a horse. 

"That is a fly. The tan desert flies will go after any scent they think of rotting flesh. They prefer to go after the dead saw toothed sand worm bodies." Ethan caught everyone's attention and began to explain. "The saw toothed sandworms will go to the surface when they die. They have eggs in their bodies so when other monsters eat them, the eggs hatch and seat those monsters inside out. The flies will help spread the eggs unwittingly like that so the sandworms live. But the flies also use the leftover body as a breeding ground. It's symbiotic."