Researchers at California Institute of Technology and Harvard University have revealed that they have created an artificial jellyfish.

When electric current is applied through a container filled with conducted liquid, the muscles contract, allowing the creature to move in water in a manner similar to a jellyfish.
The researchers expressed hope that their project could one day advance enough to allow them build artificial hearts. “The jellyfish provides a design algorithm for reverse engineering an organ's function. The jellyfish is really simple, and we're going to do one that's a bit harder, and then a bit harder still, and so on, with our long-term goal to build a heart”, one of the study authors, Prof Kevin Kit Parker said.
Source-Medindia