Comment on “Open-ocean fish reveal an omnidirectional solution to camouflage in polarized environments” | Zendy

Thomas W. Cronin | Zendy; Yakir Luc Gag | Zendy; Sönke Johnsen | Zendy; N. Justin Marshall | Zendy; Nicholas W. Roberts | Zendy

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

Author(s) -

Thomas W. Cronin,

Yakir Luc Gag,

Sönke Johnsen,

N. Justin Marshall,

Nicholas W. Roberts

Publication year - 2016

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.aaf4481

Subject(s) - camouflage , contrast (vision) , polarization (electrochemistry) , fish <actinopterygii> , omnidirectional antenna , confounding , biology , oceanography , optics , ecology , physics , geology , fishery , computer science , chemistry , mathematics , telecommunications , statistics , antenna (radio)

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.

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