Maw luur
From Wookieepedia, the Star Wars wiki.
Maw luurs were creatures used by the Yuuzhan Vong as waste disposal systems. Maw luurs would absorb the waste the Yuuzhan Vong generated, and convert it to vital materials such as metal, nutrients, and air. Maw luurs were often grown into the exoskeletons of the Worldships to provide the vessel vital nutrients and oxygen to the Yuuzhan Vong on board. It was theorized that maw luurs could provide atmospheres for entire planets.
They contained recham forteps and were used on Coruscant during the aliens occupation of the planet.
It is unknown what became of the maw luur after the war ended; though it can be assumed they were transplanted to Zonama Sekot where they would have joined the tampasi.

