Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. CNN — Corals aren’t necessarily known for their fancy footwork — or even having feet. But scientists have observed a free-living mushroom coral, Cycloseris cyclolites, actively “walking” toward blue light waves in a way that’s reminiscent of the pulsed swimming motion of jellyfish, a new study has revealed.