sUAS video of one bowhead whale rubbing on a large rock in Brown Harbour on 7 August 2016. This individual was observed with three other individuals that subsequently engaged in rubbing behavior.
To read the full article: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0186156
Reference: Fortune SME, Koski WR, Higdon JW, Trites AW, Baumgartner MF, Ferguson SH (2017) Evidence of molting and the function of “rock-nosing” behavior in bowhead whales in the eastern Canadian Arctic. PLoS ONE 12(11): e0186156. https://doi.org/10.1371/journal.pone.0186156