White/Transparent Stringy tentacle looking things, may be spreading to favia, id please

[juggalogentry]

i noticed them the other day and they appear to be spreading to my favia frag, they first started in the cluster, then spread to select parts of the sandbed, and now the frag plug, around the edges

 

[evolved]

I simply see sponges; harmless.

 

[jolt]

+1 on sponges. These come and go in my system, preferring shady areas

 

[juggalogentry]

awesome, thanks guys, i ended up freaking out and removing some of it, i didnt know if anybody could even id it and feared some unknown invasive fungus or something lol