Sand strikers, also known as bobbit worms, are primitive-looking creatures that lack eyes, or even a brain. Despite this, they are savage predators who shoot out grapple-like hooks to reel in passing fish.
Did you know dinosaurs had wishbones? Yup. When this guy was restored for display purposes, it was noted that his "furcula" was original. We think if you're pulling on a dinosaur's wishbone, you'd best get your wish.