Students from the Swiss Federal Institute of Technology in Zurich have designed and built an underwater robot that mimics movements of cuttlefish to propel it virtually silently underwater.

Propeller noise is viewed as disruptive to underwater marine life for study as well as the potential for propellers to become tangled in seagrass and kelp, so the students set out to design a robot that would surmount each obstacle successfully. They appear to have done so successfully with Sepios.

Read more about the cuttlefish robot here.