Squids (Loligo pealei and Euprymna scolopes) Can Exhibit Polarized Light Patterns Produced by Their Skin Academic Article uri icon


  • Cephalopods can see polarized light (l-3) and may use this sensory capacity for object detection and recognition (1, 4). Only recently was it discovered that the light reflected from the skin of cuttlefish, Sepia ofJicinalis (5), and possibly octopus (6) is partially linearly polarized (termed here-“polarized reflection”), generating specific optical patterns (termed here-“polarized patterns”). In cuttlefish, the polarized patterns have been suggested to be produced by dermal reflecting cells such as those found in the “Pink iridophore arm stripes”(7). Cuttlefish are diurnal animals that interact within small groups, and the polarized patterns may be playing a part in intraspecific communication (5). Therefore, we were interested in examining the polarized patterns of other cephalopod species, namely Euprymna scolopes and Loligo pealei, that possess similar skin structures, but have a …

publication date

  • October 1, 1997