Found roaming the waters of Australia and New Zealand, these somewhat eerie looking creatures typically live to be around 60-70 years of age. However, there have been instances where they have lived for over a century. One long finned eel was pegged as being 106 years of age. They grow incredibly slowly which helps aid in their longevity. They typically survive on things like snails and worms, but as they grow, they can much down on things like crayfish and even small birds.