Fig 2. Spectrogram (upper panel) showing 18 s of data from DLBB16-04 emitting a feeding click train ending in a terminal buzz, corresponding angle of arrival of each click (horizontal blue line in the 20–25 degrees) measured with script d3findclicks from the DTAG toolbox.
Time zero equates to 1.9 hrs since the whale was released, or 21:26 AKDT on 14 May 2016.