Grasper Helix
The evolution of P. ipsumpervenirous helped to make Zone 19 a viable place to live for Helix species by providing them with a food source. H. pessulus, lead by its sense of taste, eventually came upon Zone 19. This resulted in the evolution of Hexix petramiaculis.
Though terrestrial, H. pessulus still breathed using gills and occasionally spent time in the water, making the transition back to water very easy. Despite previously living in saltwater, H. pessulus never relied on the presence of salt, especially on land where only staying moist was a requirement. As a result, the transition to freshwater was trivial, as it did not have a significant concentration of salt in its body. However, because its body still has a higher salt concentration compared to the surrounding water, its cells bloated somewhat, giving petramiaculis a pudgier appearance and greater weight. If taken out of the water, its flesh becomes limp and saggy, making movement more difficult.
Petramiaculis feeds on P. ipsumpervenirous seeds growing throughout the rocky substrate of Zone 19. In response to the zone's strong current, petramiaculis has formed an additional set of legs, bringing the total up to six. This helps it hang onto rocks as it feeds, complemented by its increased mass due to water absorption. Because its mass is now divided among six legs, they are somewhat skinnier than those of its ancestor. Though it feeds primarily on P. ipsumpervenirous seeds as a consequence of its location, it will happily feed upon the seeds of other P. forensus descendants it comes across.
Like its ancestor, it grows to a shell diameter of 2-4 inches, and reproduces either sexually or asexually in an identical fashion to related Helix species (see the Helix genus description for more information).