What is this??

[cantMARKthat]

I recently bought a poylp leather coral. I have never owned one before. I have owned the little guy for 11 days now. After day 3 I thought he was a total loss and he looked like he was dying off. Now he looks really good and his polyps have very bright color and extend out, but what is growing on the left and right side? This stuff wasent there before. I dont believe it is a sponge..

 

[ndrwater]

Looks like it

 

[DSC reef]

Possibly a tunicate?

 

[cantMARKthat]

So I have no worries then. Thanks!