The Shel'na Kryhas, Khalani for Those Who Endure in English, were a group of protoss who were stranded on Aiur when the warp gate was disabled. They held to their traditions and were philosophically opposed to another group of survivors, the Tal'darim. Attempts to communicate with the Tal'darim generally failed; when the Tal'darim did respond, they generally made claims of new power and mysterious benefactors.