What the Heck is this?

[CHI-Mark]

Boys and Girls

I woke up this morning and found this on one of my Zoa's. Any idea of what it is? Its the round bubble looking " Thing "

 

[Murica]

I'm curious too cause I have what looks like that growing on the bottom of my rock.

 

[HiddenUser]

Flat worm?

 

[fragit]

It's a sponge, good thing! Except they can grow quickly and overtake some of your zoas.

 

[Tahoe61]

^ yup looks like sponge to me as well.

 

[Reefer1978]

I third a sponge.

 

[CHI-Mark]

That's what I assumed but wanted to double check. Thanks guys

 

[Ryan Schaeffer]

Its hard to tell for sure from the picture if it is a sponge in my opinion. Has the coloration and shape of common reef tank sponges, but if it just showed up over night I would suspect something else as sponges don't tend to show up that big over the course of a few hours. If i were you, I would attempt to remove it with some tweezers just in case its an egg cluster of a potential pest.