Fig. 2
From: Scientific echosounder data provide a predator’s view of Antarctic krill (Euphausia superba)

Survey effort in time. The left hand panel is the KACTAS survey (2001), with the centre and right hand panels the KAOS survey. There are two panels for the KAOS survey as there were two ‘Legs’ to the survey, i.e. one repeat of the survey. Time taken to sample a transect varies between transects because during KAOS some transects are sampled multiple times (denoted by Direction), or during KACTAS other sampling was conducted. During KAOS, acoustic sampling took place during day (light grey rectangles) and night (black rectangles).