Wahlberg Magnus, Frantzis Alexandros, Alexiadou Paraskevi, Madsen Peter T, Møhl Bertel
Department of Zoophysiology, Aarhus University, C. F. Møllers Alle Building 131, DK-8000 Aarhus C, Denmark.
J Acoust Soc Am. 2005 Dec;118(6):3404-7. doi: 10.1121/1.2126930.
A sperm whale (Physeter macrocephalus) was observed at the surface with above- and underwater video and synchronized underwater sound recordings. During seven instances the whale ventilated its lungs while clicking. From this observation it is inferred that click production is achieved by pressurizing air in the right nasal passage, pneumatically disconnected from the lungs and the left nasal passage, and that air flows anterior through the phonic lips into the distal air sac. The capability of breathing and clicking at the same time is unique among studied odontocetes and relates to the extreme asymmetry of the sperm whale sound-producing forehead.
通过水面和水下视频以及同步水下录音观察到一头抹香鲸（Physeter macrocephalus）在水面活动。在七次观察中，这头鲸鱼在发出咔哒声的同时进行肺部换气。由此推断，咔哒声是通过对右鼻腔通道中的空气加压产生的，该通道与肺部和左鼻腔通道气动隔离，空气向前流经声唇进入远端气囊。在已研究的齿鲸中，同时具备呼吸和发出咔哒声的能力是独一无二的，这与抹香鲸产生声音的额头极端不对称有关。
