Can someone help me identify something on my hairy mushroom .

[mysterasuarez]

I bought this frag today and didn't notice this white stuff I got it home. what is it?

 

[cloak]

Mesenterial Filaments. (basically the corals guts) Sometimes these are used as a defense mechanism, other times it's just an indication that something is irritating the coral.

 

[mysterasuarez]

Thank you for easing my nerves in assuming since I just put it in the tank it's in defense mode from transportation. I'll see what happens in a few days. Thank you! again