While bats live in air and dolphins live in water, both use a biological form of sonar technology called echolocation to see with sound! The specifications in dolphin and bat biosonar systems are so many, so well-integrated, and so precise, could they really have developed at random in two completely different environments?

Increasing numbers of innovative researchers borrow from biology when they examine and incorporate living systems into man-made designs. We know how man-made designs originate— people design them. But what about living designs? Two recent biomimicry research programs let slip major logic errors when accounting for the origin of the creatures they copy: the seahorse and kangaroo.