Figure 1

Map of Antarctic underwater recording sites illustrating sites used in this study (red circles) and known locations of long-term recordings from 2001 to 2017 (open circles). Map created using M_Map version 1.4k56 and ETOPO 1 bathymetry (https://www.eoas.ubc.ca/~rich/map.html). Light, medium, and dark blue lines show 1000, 2000, and 3000 m depth contours respectively.