Butt-Plug Worm

To better locate Plents, the rasping sandworm evolved the ability to smell elevated concentrations of oxygen (produced by photosynthesizing Plents). In the case of the herbivorous Plents, this led the worms to the posterior respiratory vent. A bizzare sub-species of worms began launching themselves into the breathing-holes of resting herbivorous plents. The Plent would then suffocate and die, allowing the sandworm to feed at its leisure. The corpse of a plent usually attracts large numbers of worms, which engage in a feeding frenzy... and often an orgy of mating as well. As with their deep-sea cousins there are no genders and eggs and fertilizer are simple thrown together externally. The larvae hatch after a few hours and feed on the decomposing Plent-flesh.