The continents with no native species of reptiles are Antarctica and, in some interpretations, Australia. Antarctica is an extreme environment that lacks native reptiles altogether due to its harsh climate and glacial conditions, making it unsuitable for reptiles to thrive. Australia, while it has many reptile species, is often debated because some areas or islands off the coast may have no native reptiles. However, it is this unique adaptation and isolation that allow native Australian reptiles to flourish.