The purplerot is a split from testudohexapodia acta. Off the Somarinoa beaches, testudohexapodia acta began moving farther inland, but could not survive due to the low moisture levels in the savanna. On the other hand, Slarti Swamp, which bordered the savanna was humid and wet enough for the purple algae to thrive. However, the dense foliage of the swamps blocked out a lot of sunlight, and the algae found itself unable to photosynthesize most of the time, especially if they were sedentary. A spore-based method of reproduction allowed the chance for them to grow on living, moving organisms, which had more of a chance to be exposed to sunlight. Even so, photosynthesis was barely sustaining them. A mutation began spreading among the swamp-algae population which allowed them to grow parasitic hyphae to penetrate the skin of whatever organism they were growing on, and to draw out nutrients. Evolution took it’s course, and now the algae is a ferocious ectoparasite which can rot off whole limbs in due time.