Robot powered by... slug?

Last month, scientists unveiled a tiny robot that swims using rat heart cells. Now, researchers from Case Western Reserve University have revealed a "biohybrid" robot of their own, except this one runs on slug. The robot was constructed from a harvested sea slug mouth muscle and a two–inch 3–D printed skeleton. When given electric shocks, the bot springs to life and crawls. The tiny muscle belongs to the Aplysia californica, a durable California sea slug also known as a sea hare.