Fig. 6. Spectral reflectance curves of the arm stripe of the squid with the longitudinal axis of the arm perpendicular to the y-axis (A) or parallel to the y-axis (B) and their respective partial polarization spectra (C) and (D). Data collected in Position 1 (see Fig. 1). As in Fig. 3, seven sets of spectra were obtained from the sample in both orientations (key in A also applies to B–D).