Slime

[JamesWeaver]

I have some sort of white slime that I just noticed on a piece of my live rock can someone help me out and tell me what it is and is it good or bad?

 

[lapin]

Could be a sponge.

 

[JamesWeaver]

Could be a sponge.

I have a video of it but won’t let me post the video it’s wavy and is moving around because of flow