On Impossible difficulty, being attacked by a large group of these enemies can quickly prove to be fatal. Be careful about dismembering every corpse in a seemingly Swarm-free room, as when deprived of viable corpses, Swarms will target Isaac and Carver instead.As with all Necromorphs (with the exception of the Hunters), escaping from the Swarm will usually prove futile, as they will quickly find a body and chase after you, if they have not claimed one already. It is recommended to eliminate the Swarm before it is capable of reanimating or infecting a corpse. If there is one Swarm member, there may be others. Quickly dismember the body before the Swarm gets to it, or destroy them before they can reanimate a body for better breathing room. If the reanimated body is destroyed, the Swarm will rush over to the next available corpse and re-animate a new body until killed. The Swarm allow for multiple bodies to be infected simultaneously to cause a quick wave of Necromorphs that can overpower the player quickly if not dealt with fast enough. The main attack method of a Swarm is to rush in droves to the nearest corpse and burrow into it, reanimating it and converting the corpse into either a Fodder or a Slasher. This particular form of Necromorph strongly resembles a scuttling crustacean or arachnid.

Dead space: necromorph porn