Atolla jellyfish
The body of "Atolla wyvillei" is a bell shape and it has several moderately long tentacles along the bell. The bell is around 20–174 mm in diameter. It also has a single long tentacle called a hypertrophied tentacle. This hypertrophied tentacle has several purposes, including aid in predation and aid in reproduction. These jellyfish do not have a digestive system, a respiratory system, a circulatory system or a central nervous system. Not having a central nervous system means that it lacks a brain.
John Dabiri
Reverse engineering is Dabiri's newest research focus. In July 2012, a team composed of Caltech and Harvard students and professors published a paper that outlined a tissue engineering method for building a jellyfish out of rat heart muscle cells and a silicon polymer. On a basic level, the function of a jellyfish - using a muscle to pump a fluid - "is similar to that of a human heart, which makes the animal a good biological system to analyze for use in tissue engineering." The next step this research will take is towards a self-sustaining prototype - one that can gather food and activate muscular contractions internally.