A Lungworm was a biotechnological creature shaped by the Yuuzhan Vong to supply air to to the gnullith worn with a vacuum ooglith, their equivalent of a spacesuit. Worn coiled on the wearer's back, it reached round over the shoulder to connect its mouth to the gnullith, and it could supply air for up to two hours—at which point, having run out of air itself, it would expire.
- The New Jedi Order: Edge of Victory II: Rebirth (First appearance)
- The New Jedi Order: Force Heretic III: Reunion (Mentioned only)
- Legacy of the Force: Tempest (Mentioned only)