Scale Sponge is Pick Pocketed from humanoids in Vashj'ir.
Trivia
Considdering that both the Scale Sponge and the [Snuggly Starfish] are pickpocketed from mobs in the same zone, the two items may be a reference to Spongebob Squarepants.
Patch changes
- Patch 4.0.1 (2010-10-12): Added.