From Guild Wars Wiki
- Based on their attack range, they most likely wield shortbows.
- Although they spit from their maws to shoot, they actually fire normal arrows.
- If hit with a physical attack as they descend into the ground, the attack will not appear to hit, but the worm will pop up about a second later and will appear to have taken the damage (including damage dealt by Ignite Arrows).
- If you kill them right before they go into the ground they may drop something but they will not leave a corpse.
- Plague Worms have 50 health.