Clanspeak

Carl understood clanspeak, of course, but only someone with two independent sets of vocal chords could speak it fluently.

He spoke the grymjek, the clanspeak, better than Anna's own father.

National Geographic: The hidden world of whale culture https://www.nationalgeographic.com/magazine/article/the-hidden-world-of-whale-culture-feature CLANSPEAK Members of a sperm whale family near the Caribbean island of Dominica are part of a clan that's culturally distinct from others. Each clan communicates in its own dialect of click patterns, like Morse code.