Tenellia futairoTenellia futairo is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Fionidae.DistributionThis species was described from Mukaishima, Seto [Inland Sea|Inland Sea of Seto], Japan. Also reported from Mutsu Bay, Sagami Bay; Sugashima near Toba, Osaka Bay, Saeki Bay, Amakusa and Toyama Bay in the original description.DescriptionThe typical adult size of this species is 10 mm. The body is pale orange-yellow with the tips of the oral tentacles and rhinophores deeper orange-yellow. The oral tentacles have a longitudinal opaque white band on the posterior side. The cerata have an opaque white mark below the tip on the outer surface.