How do sperm whales communicate?

Sperm whales have a more complex language system than ever imagined, according to new research.
They communicate by squeezing air through their respiratory systems to make strings of rapid clicks that can sound like an extremely loud zipper underwater.
Scientists now believe those sounds compose a “phonetic alphabet,” allowing for complex communication through miles of water. Researchers noted similarities to aspects of other animal communication systems - and even human language.
Sperm whales are highly social creatures, traveling in family groups. It’s hard not to see cousins playing while chatting, to not see moms hand over to a babysitter and exchange a few words before walking out the door, so to speak, to go eat in the deep ocean.