%0 Journal Article %T Physical properties of the tunic in the pinkish-brown salp Pegea confoederata (Tunicata: Thaliacea) %A Daisuke Sakai %A Euichi Hirose %A Hiroshi Kakiuchida %A Jun Nishikawa %J Archive of "Zoological Letters". %D 2018 %R 10.1186/s40851-018-0091-1 %X The online version of this article (10.1186/s40851-018-0091-1) contains supplementary material, which is available to authorized users %K Ultrastructure %K Hardness %K Transparency %K Light reflection %K spectroscopic ellipsometry %K nipple array %K rigorous coupled wave analysis (RCWA) %K Salps %K Pegea %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5896079/