What exceptions are there to the statement that ants are ubiquitous?

While ants are found in diverse environments around the world, they are absent from certain regions, such as polar areas like Antarctica and extreme deserts where conditions are inhospitable. Additionally, some isolated islands, like those in the Hawaiian archipelago, may lack native ant species due to their geographical isolation. Furthermore, specific habitats, such as high-altitude regions or deep ocean environments, may not support ant populations.