There are many different types of humanoid robots out there but this is the first one created solely for swimming. SWUMANIOD (SWimming + hUMANOID) was created by researchers Motomu Nakashima and Chung Changhyun of the Tokyo Institute of Technology. The robot was made to reproduce the motion of human swimmers while measuring water resistance.
SWUMANIOD was made by first doing a 3D scan of a real person’s body, then using 3D printed parts to make a 1/2 model. Next they added 20 water-proof motors and programmed the bot to imitate human swimming techniques such as; the breaststroke, backstroke, butterfly and dog paddle. Because this robot is only 1/2 the size of a human it’s movement in water is considerably slower, but the researchers have plans to make a life size model that more accurately mimics realistic swimming.
via (Touch Me!)