Science is still baffled as to where the Eels actually come from

15. The following are the main threats to Eels: Birds, Large Fish, Parasites

They are predators and carnivores, but they can also be cannibalistic. Eels can be eaten by large fish or, in some cases, even mammals such as raccoons. Humans are the biggest predators of eels. We have already stated that humans have overfished many species of eels.