Hazzali Swarmers can be found in The Gaping Chasm in Tanaris
[47.8, 72.3]![[47.8, 72.3]](/wiki/File:WorldMap-Tanaris.jpg){kind=link}
. When the Swarmer dies Hazzali Parasites burst out of it.
One swarmer is found behind the portal of the entrance to the Black Morass, dropping in from the ceiling, it is unknown if this is a game bug or intended. Because in the game world the Gaping Chasm is above the Caverns of Time, it is likely a bug.