Swarmers are tiny Necromorphs that appear Dead Space and Dead Space 2. Appearing to be mere scraps of flesh reanimated by the Necromorph infection, these creatures always move around in groups and will attack victims en masse, swarming and crawling all over a victim's body and continuously biting until their prey succumbs.
Swarmers most often reside within the bellies of Pregnants and will be released if the Pregnant's stomach is ruptured. Because Swarmers always move close together, it is a simple task of destroying them all quickly with weapons that have a wide firing range, such as a flamethrower or Line Gun mines.