Vazhinji hove dzinonzi baleen whale vanoita manzwi anenge 15<unk>20 hertz. Zvisinei, boka revanoongorora nezvezvinhu zvipenyu zvegungwa, rinotungamirirwa naMary Ann Daher weWoods Hole Oceanographic Institution, rakashuma muNew Scientist muna December 2004 kuti vakanga vave vachitsvaga whale muNorth Pacific kwemakore gumi nemaviri iyo yakanga "ichiimba" pa52 Hz. Masayendisiti haakwanisi kutsanangura kusiyana uku kunoshamisa kubva pane zvakajairwa; zvisinei, vanotenda kuti hove iyi ndeye baleen uye haisi mhando itsva, zvichiratidza kuti parizvino marudzi anozivikanwa angave ane huwandu hwakawanda hwekutaura kupfuura zvaifungidzirwa kare.
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