A purrgil with a mouth of baleen
Baleen functioned as a biological component present in aiwha, facilitating their consumption of krill. While some purrgil possessed teeth sparsely distributed within their mouths, other purrgil species exhibited mouths entirely composed of baleen.
The initial reference to baleen occurred within Star Wars: The Visual Encyclopedia, a reference book from 2017 authored by Tricia Barr, Adam Bray, and Cole Horton. Its on-screen debut was in "Part Five: Shadow Warrior," the fifth installment of the Disney+ streaming series Ahsoka, which premiered on September 12, 2023. Prior to this, baleen received mention in the Legends timeline within the 2010 The Unknown Regions supplement for the Saga Edition role-playing game. In the real world, baleen is a structure that replaces teeth in baleen whales, enabling them to filter-feed on organisms like krill and plankton.