For years, scientists knew little about the elusive and dangerous electric eels. Finding a home in the Amazon, these eels have been known as one species. But recently, scientists discovered they are not one, but three distinct species. In addition, a newly discovered species Electrophorus voltai, is shockingly powerful, with shocks measured at 860 volts, well over the previous record of 650. But why are these eels so special? And are they really "eels"?