Are they as rare as the 52 Hz whale?<p><a href="https://en.wikipedia.org/wiki/52-hertz_whale" rel="nofollow">https://en.wikipedia.org/wiki/52-hertz_whale</a>
> There’s a lot the biologists don’t know about these songs. Like, uh, their purpose.<p>Is this really considered an acceptable way to write these days?<p>Incredibly sad to hear how there are <30 whales in this region. Especially when listening to one's calls. Wonder what kind of whale-to-whale range these songs have.