Most of us have probably used a 9-volt battery. They power small household items such as clocks, smoke detectors, and toys.

In these clips, an electric eel in the lab attacks a dead fish attached to wire, which is shaken to simulate a struggle. The sounds represent the change in voltage level the eel is producing.

The Shock of the Hunt Electric eels primarily use their electrical abilities to hunt for food. Their diet consists mainly of fish, amphibians, and invertebrates, and they rely on their electricity ...