The rainforest centiworm split from the centiworm. It has moved farther inland and digs through the wet soil. Its chemoreceptive "horn" has turned into a digging jaw in which it helps its other jaws to dig through the soil. Its 3 other jaws are used to dig through the wet soil and grasp food particles. Its underside fins are merged with its belly and are used as "scoots" to help it move through the wet soil. It has developed many more segments so it bends easier in the wet soil.
It breathes between its segments and must be in moist soil otherwise its micro-lungs will dry out and suffocate the creature. It eats the waste of other creatures as well as the decomposing flora matter of the rainforest. It helps clean up the forest floor. It must use puddles to lay its egg-like spores. They do this once a year where each of the 3 sexes expels its part of the reproduction process. They require 1 egg-like spore, 1 sperm and 1 hormone cell. Without the hormone cell from the 3rd sex bonding to the egg-like spore, it will not allow the sperm to enter the egg-like spore.