Complex sentence: They are capable of generating powerful electric shocks 860 volts (highest measurement made so far according to monsterfish TV show on Nat Geo wild channel), which they use for hunting, self-defense, and communicating with fellow eels.
Split into simpler sentences: They are capable of generating powerful electric shocks, 860 volts wich is highest measurement made so far according to monsterfish TV show on Nat Geo wild channel. They use this for hunting, self-defense, and communicating with fellow eels.