Don't Disturb me, I will give you a Shock.

The electric eel is a very effective predator, despite its poor vision. It has an excellent sense of hearing, however, and also a Sachs organ, which has been linked to electrolocation. This organ, which is the third and smallest of the eels electric organs, emits a low voltage charge of about 10 V. It is thought that the eel uses these weak charges for orientation, as well as locating prey and potential mates. Some scientists feel it is also used in a rudimentary form of communication.

  

 

The more powerful electrical charges come from the Hunters Organ and the Main Organ. All of the organs together are comprised of some five to six thousand electroplaques that are stacked in a manner similar to the common battery. When the eel becomes upset or is preparing to attack a prey animal, its brain signals the electric cells in these organs. An ion channel is opened and positively charged sodium flows into the organs, reversing the charge for a moment. The product of this sudden shift or disturbance in voltage creates an electric current. Eels can produce a shock typically as powerful as 650 V but have been known to emit bursts over 700 V. These are the shocks issued during predation and defense. In total, the three electric organs make up 80% of the electric animal's body, with the vital organs comprising the other 20%.

Eels prey upon a range of smaller creatures. Eels have no maxilla teeth, but have the luxury of taking their time while consuming a stunned animal. They prey upon mammals and fish, sometimes also taking an inveterbrate if an easy opportunity presents itself. The younglings will eat invertebrates, primarily crabs and freshwater shrimp. Newly hatched eels will also consume the eggs and embryos from later batches. Eggs are laid in a nest made of the male’s saliva. As many as 17,000 eggs are laid in a single clutch.