Fig. 1From: Measurement of refractive indices of tunicates’ tunics: light reflection of the transparent integuments in an ascidian Rhopalaea sp. and a salp Thetys vagina a Thetys vagina collected near Cape Zanpa (photo: James-Davis Reimer). b Rhopalaea sp. found in Kin Bay (photo: Ryosuke Uozumi)Back to article page