Fig. 1From: Detecting narwhal foraging behaviour from accelerometer and depth data using mixed-effects logistic regressionDepth timeline for each tagged whale. Buzzing times are indicated by black dots. Dashed lines indicate midnight. Red lines indicate the initiation of echolocation. The blue line for 2014MM6 and 2016MM3 indicates where Acousonde were filled to capacity and acoustic data were no longer recorded. The data prior to the red lines and after the blue lines were discarded for the analysisBack to article page