Robots with fins & tails demonstrate evolution

It hardly looks like it, but two swimming robots were set loose in the little pool to study evolution, acting out predator-prey encounters from roughly 540 million years ago.   Robots  can do things like shimmy through water or slither up shores.   For instance, researchers can test theories on the development of stiffer backbones.

Image:  Robotic tailfin

Did you think robots could help us do this?