The eels main adaptation is its intelligence. Some science types have postulated that with the correct training eels could be taught to find drowned people or even sunken submarines, boats and treasure.
Fish + Lightning = Eel
electric
A eel is a fish
by not having legs
electricite
An eel is a fish.
It is eel like fish. Fishes and also eel fish,
no a eel is a fish
eel = fish + electricity
It is.
Eels are fish.
An eel is a fish.