Electric Knifefish Charged with Sixth SenseA small organ in the tail of the Ecuadorian weakly electric knifefish generates an electric field, which is used as a sixth sense to communicate, navigate and hunt prey. Each fish actually generates its own electric frequency, which changes in pitch as other fish approach. 
Video
Can you imagine if your body could produce an electric field? What would you use it for?

Electric Knifefish Charged with Sixth Sense

A small organ in the tail of the Ecuadorian weakly electric knifefish generates an electric field, which is used as a sixth sense to communicate, navigate and hunt prey. Each fish actually generates its own electric frequency, which changes in pitch as other fish approach. 

Video

Can you imagine if your body could produce an electric field? What would you use it for?