Spectrogram of 20190810-061944_AWI244-06 (Photo: OZA AWI) The Antarctic blue whale (Balaenoptera musculus intermedia) © Marie Schall Antarctic Blue Whale (Photo: OZA AWI) The low frequency calls of Antarctic [...] ears. Spectrogram of 20190406-005042_AWI244-06, speed up by factor 8. (Photo: OZA AWI) The fin whale (Balaenoptera physalus) © Marie Schall Fin Whale (Photo: OZA AWI) Fin whales produce a variety of short [...] contains a higher frequency component around 89 Hz. Spectrogram of 20130705-065537_AWI251-01, speed up by factor 8. (Photo: OZA AWI) The killer whale (Orcinus orca) © Marie Schall Killer Whale