Ghazakl worms were non-sentient annelids native to the planet Yuuzhan'tar, the homeworld of the sentient Yuuzhan Vong species. The worms were considered meaningless by the Yuuzhan Vong, and did not have enough intelligence to comprehend the most menial of tasks that the other species performed. By 28 ABY, when the Yuuzhan Vong were invading a galaxy other than their own, some Yuuzhan Vong still used the ghazakl worm in comparisons to make things or beings seem meaningless or unintelligent.