Electric Eel

The electric eel has three pairs of abdominal organs that produce electricity. These organs make up four-fifths of its body, and give the electric eel the ability to generate two types of electric organ discharges: low voltage and high voltage. These organs are made of electrocytes, lined up so a current of ions can flow through them and stacked so each one adds to a potential difference. 

When the eel finds its prey, the brain sends a signal through the nervous system to the electrocytes. This opens the ion channels, allowing sodium to flow through, reversing the polarity momentarily. By causing a sudden difference in electric potential, it generates an electric current in a manner similar to a battery, in which stacked plates each produce an electric potential difference. In the electric eel, some 5,000 to 6,000 stacked electroplaques are can make a shock up to 860 volts and 1 ampere of current (860 watts) for two milliseconds.^{[citation needed]} Such a shock is extremely unlikely to be deadly for an adult human, due to the very short duration of the discharge.

There are several myths that human have become prey to electric eel. Find the picture where a crocodile become prey to electric eel.

Picture Source: Collected from Internet