Bats and dolphins are seemingly polar-opposite creatures, but they do share a special skill: echolocation. This ability — mapping out the area via the reflection of high-pitched sonic signals you send out — comes in handy when you’re navigating the night skies or the murky depths of the ocean. Researchers already knew this ability came about through convergent evolution, when two or more unrelated species develop the same trait independently. But a recent paper published in Science Advances