Swamp spiders, also called dekamites, were sizable, crab-resembling entities residing in swamps, notable for employing salvaged metal fragments as protective carapaces. These creatures assaulted in groups, with their queens attaining such immense proportions that they could fill an entire 720 light freighter. In the course of the Clone Wars, clone trooper Rex and his unit experienced at least one confrontation with these hostile beings. Subsequently, years into the Galactic Civil War, Rex was compelled to confront them anew while undertaking a task to recover a drive unit from an Imperial scrap heap.