Name that thing!

[BigSkyRich]

So this coral has been doing really well for quite some time and this morning noticed this white cotton looking growth on it. Picture attached. Did some searching and really couldn't find anything. Any thoughts?

Thanks

 

[uhgster1]

Are you sure it’s something live? Looks more like tissue recession. Is that a torch under it? Torches are known for stinging other corals.

 

[BigSkyRich]

Thanks very much for responding. That is a Duncan under it - not sure if thats part of the torch family. Hard to say if its live or not, but just seems to have appeared very quickly