A MORAY is a type of eel that has a snake-like body and can grow up to 4 feet in length. It is found in tropical and subtropical waters around the world. A LAMPREY is a type of eel that has a jawless, scaleless body and can grow up to 3 feet in length. It is found in fresh and saltwater habitats around the world. An ELVER is a type of eel that is a juvenile form of the adult eel and is usually only a few inches in length. It is found in rivers and estuaries around the world.