The Perna Eluca is an enemy in Xenoblade Chronicles that are members of the Eluca family. They can be found at level 32 - 33 on Latael Shore in Eryth Sea. They can drop Scratched Jewels, five of which are needed for the "Betrothal Test (Zel Argentis)" quest. They can also drop Murky Eluca Water, three of which are needed for the "Teaching Materials" quest.