Comment on "Open-ocean fish reveal an omnidirectional solution to camouflage in polarized environments"

Brady et al (Reports, 20 November 2015, p. 965) claimed that the silvery sides of certain fish are cryptic when viewed by animals with polarization sensitivity, which they termed "polarocrypsis." After examining their evidence, we find this claim to be unsupported due to (i) pseudoreplicat...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2016-08, Vol.353 (6299), p.552-552
Main Authors: Cronin, Thomas W, Gagnon, Yakir Luc, Johnsen, Sönke, Marshall, N Justin, Roberts, Nicholas W
Format: Article
Language:English
Subjects:
Animals
Camouflage
Color
Ecosystem
Environment
Fish
Fishes
Light
Oceans and Seas
Polarization
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Summary:Brady et al (Reports, 20 November 2015, p. 965) claimed that the silvery sides of certain fish are cryptic when viewed by animals with polarization sensitivity, which they termed "polarocrypsis." After examining their evidence, we find this claim to be unsupported due to (i) pseudoreplication, (ii) confounding polarization contrast with intensity contrast, and (iii) measurements taken at very shallow depths.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aaf4481