move up a vertical surface with no interruption? I've seen this represented so many times in various fictional media, that I'm curious if there is some real life phenomena from which it draws inspiration? There are probably factors such as the size of object involved surely? Anyway, this is the first of hopefully many posts here from me. So Hello. :) Hopefully this is the appropriate forum. edit: And this is of course, assuming that the object doesn't have some adaptation to aid it, such as with arthropods.