" There's a humpback whale in the ocean that sings at fifty-two hertz: too low for any other whale to hear. Scientists aren't sure if it's a genetic anomaly, or a sole survivor of an extinct species, or just a whale who accidentally learnt the wrong song. They just know that it's probably the loneliest mammal on earth. "

― Holly Smale , All That Glitters (Geek Girl, #4)