Found in the Uncharted Isle expedition. If you tame this crab rather than killing it, the scenario cannot progress any further and you will need to leave and restart.
Found in the Battle for Azeroth zone phase. Located offshore in various parts of the zone, but only occurs sporadically.
*Level scaling: In Shadowlands most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.