Can be tamed.
Located in Kaja'mine, Kezan. While this shale worm is flagged tameable it is very difficult to tame. it is only accessible to goblins, during their intro quest chain and phases out after you score the goal in the footbomb game and the volcano erupts. Because Worms are classed as Exotic you need to be level 39 to tame it. This means you'd have to grind for a very long time, killing Kezan NPCs, to reach a level at which you could tame it before leaving the island.