Living in both salt and fresh water, eels can be found in oceans and seas around the world.  Eel bodies are snake-like in appearance and allow them to be fast swimmers.  Not picky eaters, they find most food by smell and prefer to hunt at night.  Text is easy to read.  Xtreme Fact boxes add extra information.  Photographs are close-up, colorful and detailed.  Human behaviors are mostly responsible for a drop in European eel populations so they are on the endangered species list.  Glossary and index included.