Can you identify this white goo?

[Ralph Ritoch]

The first time I saw this stuff I removed it with a net. It looks like some kind of eggs but this time it is in two places and the one in the rock has a redish top. I didn't see this until the coral were added to the tank but I'm using live water and live sand directly from the ocean so can't identify exactly where it came from.

Can you identify this white goo?

 

[KJ]

Welcome to R2R!!!
Look like a sponge.

 

[Ralph Ritoch]

Welcome to R2R!!!
Look like a sponge.

Thank you for the ID. The wavemaker tends to blow them around the tank but I'll leave them alone. I was worried that it was some kind of fungus.