Lung possessing, Lungless
The Alpusta are a species of sentient life that has developed in the gases of the planet Alpusta. Two distinct subspecies of Alpusta are known to exist. One subspecies evolved without lungs, while the other retained their lungs. Those Alpusta with lungs were able to survive in the various gases of their homeworld, but required special breathing apparatus in order to survive in oxygen-based atmospheres. The lungs of the Alpusta are quite efficient, able to utilize nearly 85 percent of the atmosphere they breathe in with each breath. It was later discovered that those Alpusta with lungs could not regenerate body parts like those of the other subspecies. The Alpusta have developed a totalitarian monarchy, and various colonies of Alpusta live in pockets of mist in the gas giant's atmosphere. When renegade Alpusta are sought, findsmen are sent out to locate them.