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 ...

Late in the evening, the Antarctic sky flushes pink. The male leopard seal wakes and slips from the ice into the water. There, he’ll spend the night singing underwater amongst the floating ice floes.

In a study published today, UNSW Sydney researchers found that the underwater songs of leopard seals (Hydrurga leptonyx) in Antarctica share structural similarities with the nursery rhymes often sung ...