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Fig. 1. Dorsal view of Loligo opalescens (40 mm ML), ventral view of 12 mm ML inset to left. Dimensions of each body part measured for allometry analysis: dorsal mantle length (ML), fin length (FL), funnel aperture (FA), fourth arm length (AL), tentacle length (TL), diameter of the eye (ED), fin width (FW), mantle width (MW) and head width (HW).