The Kera-boa represented a gelatinous life-form employed by the Yuuzhan Vong Shaper caste to encase the skeletal structure of an evolving Vangaak.
After being affixed to the vangaak's framework, the kera-boa exhibited accelerated reproduction, resulting in a protoplasmic, somewhat aware colony that extended countless minuscule tendrils downwards from the vessel. Through coordinated motion, these tendrils enabled the craft to be maneuvered in all directions.