A comparison of the structure of leopard seal songs to those of other mammals and various forms of human music has found the closest counterpart to be nursery rhymes. Unsurprisingly, however, the ...

Melodies of land and sea To understand how leopard seal songs compare to other species, Chambers and her co-authors looked at entropy—the measurement of how predictable or random a vocal sequence is.

Typical behavior of leopard seal vocalizations—the male will sing a sequence of sounds underwater before returning to the surface to breathe (represented by a "Z") and repeats this cycle for hours at ...