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. 2019 Oct 10;9:14654. doi: 10.1038/s41598-019-50961-z

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Profiles of the percentage of bioluminescent and likely-bioluminescent individuals per group and by depth. Only taxa observed at more than 4 different depths have been represented (benthic Arthropoda, Fishes and Hydroidolina have been removed). The black line represents a local loess regression (span = 0.5) with the grey bands being the 0.95 confidence interval around the smooth fit. The size and color scale show the maximum number of observations per class, used to weight the regression.