There’s a great mammal in the ocean known as the 52-hertz whale. All year, he practices his love song for the female. Travels thousands of miles to find her. But when he finally gets the chance to serenade her, she doesn’t give him a call back. Why? His love ballad is sung at 52 hertz, a sonic signature one note higher than the lowest sound of a tuba. The average female hears at 10 to 15 hertz. So she never hears his song.