Hydruka

http://upload.wikimedia.org/wikipedia/en/f/f1/Hydruka.jpg Hydruka are rahi who are known to be ill-tempered.

The two known hydruka, Thulox and Morak (above), have a role in the upcoming storyline, particularly in harvesting compressed air bubbles. These air bubbles can be fired from what it seems like a Zamor Launcher, which can be used to defend oneself from water breathing life (possibly against the Barraki), since it is poisonous to them.