Fig. 2
From: A dawn peak in the occurrence of ‘knifing behaviour’ in blue sharks
Frequency distribution of depths occupied by blue sharks by time of day (from PSAT tag data). Depth data are binned into 6-h intervals. a Shark A was tagged in September 2010 and was at liberty for 120 days, and b shark B was tagged in September 2012 and was at liberty for 70 days. The coarse resolution of this data makes it difficult to discern patterns in knifing events