See also: Eel Trivia
Ancient Romans bred moray eels in seaside ponds and supposedly they occasionally fed them live slaves. There are some 80 species and their flesh can be toxic.
Moray eels can grow up to 10 feet long, but most do not exceed about 5 feet in length.
King Henry I of England (1068-1135) is supposed to have died from indigestion caused by eating either lamprey eel or moray eel. (Most likely it was food poisoning).