Ice wyrms were huge worm-like creatures that were at home in the icy climates of Barton IV. They had hardened, bumpy shells and gaping mouths that contained multiple rows of teeth. Ice wyrms traveled beneath the snow, creating large, grooved tunnels as they drilled, using blowholes to breathe as they breached the surface. They were much less active during the coldest seasons of the planet, but could be deterred in slightly warmer conditions using sensor beacons, such as those seen at the Imperial Depot situated on the planet.