An amphibious all-terrain vehicle, amphibious ATV, (or AATV) is a small, all-wheel drive, all-terrain amphibious vehicle, used for recreation, farm-, hunting, utility or industry tasks, by enthusiasts and professionals worldwide. They are legally off-highway vehicles in many countries, or at least restricted from use on express highways and motorways – their use is generally extra-urban. To distinguish the original class of vehicles from the newer, straddled ATVs, the amphibious ones now go by the classification of 'amphibious ATV'.