Help identify

[jellybowl]

This just started growing in my little Nanocube Dx. Standard lighting and everything.
It's growing on a turbine shell. It looks like little bits of coral that you would buy in a souveneire shop, but of course there are clear polyps in each of the "holes"

 

[sweetreef]

yeah i have a few of them as well really not shure what they are they are soft to the touch so iam think some kind of sponge..

 

[jellybowl]

Actually, it's not soft. It's really hard and calcified. The "fuzzy" upper left part are the tiny clear polyps sticking out.

 

[jamnman]

Looks like a type of porites.

 

[jellybowl]

what exactly are porites? Will these grow vertically, or do they just kinda cover stuff?

 

[yosemite sam]

I agree, it looks like some kind of porites. They are an SPS coral, and there are many different varieties of them that are both encrusting and branching.