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  • An acoustic valve within the nose of sperm whales Physeter macrocephalus 

    Huggenberger, Stefan; André, Michel; Oelschläger, Helmut A. (2014-04-01)
    Article
    Restricted access - publisher's policy
    Sperm whales Physeter macrocephalus emit impulsive sound signals in short series of rhythmic clicks (codas) for communication, and in long series of single acoustic events (usual clicks) for echolocation. Both click types ...
  • The nose of the sperm whale: overviews of functional design, structural homologies and evolution 

    Huggenberger, Stefan; André, Michel; Oelschläger, Helmut A. (2016-06)
    Article
    Open Access
    The hypertrophic and much elongated epicranial (nasal) complex of sperm whales (Physeter macrocephalus) is a unique device to increase directionality and source levels of echolocation clicks in aquatic environments. The ...