In a case similar to the naked mole rat, a pale member of Progyrou Scatler started to reproduce unusually early in life. Progyrou Scatler had pale young that could almost float, molting to grow into adulthood. Now, since they were descendants of the young ancestor, they retained their larval traits even at adulthood. these were renamed Periplanomenos phantasm, or "Phantom wanderer", named because they aimlessly drifted in large clouds. They were smaller than their ancestors, and they ate organic matter caught in the water.