From Humann's "Reef Creature Identification":
Strawberry Tunicate - Eudistoma sp.
"Occasional Florida, Bahamas, Caribbean.
Inhabit reefs. Often grow in areas of dead coral and algae.
Unafraid; close siphons only when molested.
This growth form of the genus is probably an undescribed species. It is closely related and could possibly be the same as an Indo-Pacific species."
Where did you get it? I hope it lasts, it's beautiful. I'm not sure about the legaity of removing it though.