Qalsneek's holocron was a sea-crystal holocron created by Jedi Master Qalsneek the Bull. It was discovered during exploration of the Derem City ruins on Kamino, where a vast library, that appeared to have been maintained by a group of Jedi Knights, was uncovered. This holocron, along with many other aquatic artifacts, were relocated by Qalsneek from Ossus to Kamino following the destruction of the Cron Cluster.