Not sure what this is

[Bulldog07]

Went downstairs a couple nights ago and found this white thing on my torch. It doesn't seem to bother there coral during the day, and it's only visible when the coral is closed up at night. I'm not terribly concerned that it is harmful, just curious.

 

[easternreefer]

looks like a pineapple sponge. filter feeder. may eventually disappear on its own.

 

[Bulldog07]

looks like a pineapple sponge. filter feeder. may eventually disappear on its own.

Thanks!