A team led by Prof. Peer Fischer from the Max Planck Institute for Intelligent Systems in Stuttgart, Germany [http://www.is.mpg.de/fischer] has developed an artificial micro-swimmer, called “micro-scallop”, which can swim through viscous fluids by opening and closing its shells at different rates. More info: Tian Qiu, Tung-Chun Lee, Andrew G. Mark, Konstantin I. Morozov, Raphael Münster, Otto Mierka, Stefan Turek, Alexander M. Leshansky, and Peer Fischer. "Swimming by Reciprocal Motion at Low Reynolds Number". Nat. Commun. 5: 5119 doi: 10.1038/ncomms6119 (2014).