Polarization vision helps detect transparent prey

@article{Shashar1998PolarizationVH,
  title={Polarization vision helps detect transparent prey},
  author={N. Shashar and Roger T Hanlon and Anne deM. Petz},
  journal={Nature},
  year={1998},
  volume={393},
  pages={222-223}
}
Transparency enables aquatic organisms to avoid detection by visual predators. But we have found that this camouflage can be broken using a visual mode evolved by several predators, such as squid. Under partially linearly polarized lighting, squid detect zooplankton prey at a distance 70% greater than those achieved under non-polarized illumination. The role of polarization sensitivity in predation is confirmed by squid's preference for transparent, yet polarization-active, targets that mimic… CONTINUE READING

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