The Antarctic blue whale (Balaenoptera musculus intermedia), recording 2

The low frequency calls of Antarctic blue whales belong to the loudest vocalizations produced by any animal. Most likely blue whales use calls to communicate over long distances. PALAOA records different Antarctic blue whale vocalizations. The spectrogram shows the 'Z-call' which is a population-specific song produced by Antarctic blue whales in the Southern Ocean as well as on their lower latitude areas where breeding is thought to take place.  Please note that we increased the frequency of the sound with 2 octaves to make the sound audible to human ears.

Recording credit: CC-BY 4.0 Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research 2022.

Part of the Polar Sounds project, a collaboration between Cities and Memory, the Helmholtz Institute for Functional Marine Biodiversity (HIFMB) and the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI). Explore the project in full at http://citiesandmemory.com/polar-sounds.