Okay, it's quiz time. Here's a picture of a guy standing beside a couple of kayak hulls. Can you guess what kind of kayaks they are?
Give up? Well, I'm not surprised that you didn't get that one -- it's a trick question. They're not kayak hulls at all, it's the skull of a blue whale.
And as they said over at boing-boing where I found this, enjoy a moment of "woah."