Coral 'hitchhiker' ID?

[Atomic_Mudkip]

So when I got my coral it had these two green squishy things attached which I mistook for a foot but I may be wrong. They have the same texture as the coral itself but are green and almost look like pincers?

one appears to have turned a black colour whilst the other is still green.
~Mudkipz

 

[PureReef]

Looks like some form off algae

 

[Lionfish Lair]

If I had to quess, I would say it was a tunicate.

 

[Sm51498]

I would hazard it is a kind of fast growing branching sponge, it's pretty cool if it is what I think.

 

[Atomic_Mudkip]

From what it looks like I'd say it is a tunicate having seen photos of them. Will it harm my coral? It appears to be growing into my Xenia's 'trunk'...

 

[Lionfish Lair]

Just pull it out. They tend not too do so well in our tanks long term anyways and that one isn't particularly pretty.