Fig. 1
From: Blue whale (Balaenoptera musculus) sightings off the coast of Virginia
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs41200-020-00189-y/MediaObjects/41200_2020_189_Fig1_HTML.png)
Sighting locations of blue whales from aerial (blue dot) and vessel (green dot) surveys. The location of the High-frequency Acoustic Recording Package (HARP) is indicated by the orange triangle