They sing by striking their flippers against their chests to hit their pharyngeal pouches, balloon-like extensions of the trachea that are unique to Odobenus and that also serve as flotation devices.

• 牠们用鳍拍胸膛，打击咽囊，也就是气管的延伸，状似汽球，是海象独有的特徵，同时也有漂浮的作用。