Heptooinian precursor species

A species that originated from the Heptooine system and eventually evolved into the sentient Heptooinian species. They possessed an organ that could store oxygen, which was considered a leftover vestigial by the Heptooinians and commonly extracted when still young, though those who kept theirs until adulthood could still store approximately half an hour's worth of oxygen inside.

Text and facts from the “Heptooinian precursor species” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.