Stillsail

The stillsail was a type of membranous creature that lived in the Stratos Distribution, a vast Unknown Regions corridor of dust, asteroids made up of ice and mineral-rich rock, and forests of crystalline comet fronds. The stillsails measured more than a hundred thousand kilometers across, and they shared their habitat with predatory lightning-jacks and asteroid-burrowing wormlike chewers, the latter of which were evolutionarily related to the sentient Lugubraa species that also originated in the Stratos Distribution.

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