Palio zosteraePalio zosterae is a species of sea slug, a nudibranch, a shell-less marine gastropod mollusc in the family Polyceridae.DistributionThis species was described from Vancouver Island, British Columbia, Canada. It is found from Vancouver Island to Bodega Bay, California.EcologyPalio zosterae feeds on the bryozoans Bowerbankia gracilis and Membranipora membranacea.