What is it? Can't be good . . .

[patsheridan]

I have noticed a few of these in my 75g mixed reef tank . . . sorry for the poor quality pics!

 

[ChiCity]

Sponge or tunicates...
They're good

 

[Mike N]

+1 for the good guys

 

[patsheridan]

Promise?!?!

Every time I post a what-is-it question, it always turns out bad . . .

 

[Lionfish Lair]

Promise?!?!

Every time I post a what-is-it question, it always turns out bad . . .

I hope I didn't ID any of the past critters... I hate to think I was the cause of your hitchhiker PTSD.

I agree. Harmless and actually quite attractive. If it ever grows too much, grab it and peel it back.

 

[patsheridan]

That's pretty funny - hitchhiker PTSD. But pretty darn accurate . . .

+++ 1 for sure for the good guys!