The common blue whale call is about 13 hertz. Over the years biologist have studyed a whale like call that is over 50 hertz. At the same time it has gotten a deeper tone, as whales do when they age. It maybe a deformed blue whale, or even worse the last of its kind. They named it the loneliest whale in the world, because to this day. Nothings answered it back. Thought I'd add some depressing stuff for everyone.
Updated by Lance Armstrong