When it comes to the animal kingdom, anything goes, it seems. From sounds heard miles away to spontaneous sex changes, these little-known facts were probably not discussed in that high school biology class you took.
Blue whales like to sing. They're proud of their songs. So proud, they want to share them with the world around them. And at 155 decibels loud, their songs can travel up to 1000 miles underwater. Go big or go home.