Why don't electric eels electocute themselves?

[mother]

Why don''t electric eels electrocute themselves when they kill fish in the water (given that water conducts electricity)?

[Sensei]

Eels have a long organ which is similar to batteries in that one of the body is positive and one is negative. The water or prey around them acts as a conductor. The eels have a thick layer of fat surrounding their bodies. The fat conducts electricity poorly compared with the surrounding water. Electricity takes the path of least resistance, so it flows through the water and not the eel.