Electric eels – actually a type of knifefish, not true eels – are notorious for being able to produce a hefty electric shock of up to around 600V. The source of their power is a battery-like array of cells known as electrocytes, which make up around 80 per cent of the eel's metre-long body.

How painful is an electric eel shock?

The average shock from an electric eel lasts about two-thousandths of a second. The pain isn't searing — unlike, say, sticking your finger in a wall socket — but isn't pleasant: a brief muscle contraction, then numbness. For scientists who study the animal, the pain comes with the professional territory.

Can an electric eel shock you after its dead?

They are also known to still emit discharge eight to nine hours after their death. The shock from an electric eel affects the body by altering physiological functions such as involuntary muscle actions and respiration. Symptoms of being shocked by an electric eel can be respiratory paralysis and cardiac failure.