Sponge ????? What is it

[cheykaser]

Any thoughts as to what this could be covered on one of my zoa gardens...."did" have a large patch of shinny bubble looking bumps but was firm to the touch....I have removed it... thought of pulling the whole rock and let it get exposed to the air

 

[Dan_P]

Any thoughts as to what this could be covered on one of my zoa gardens...."did" have a large patch of shinny bubble looking bumps but was firm to the touch....I have removed it... thought of pulling the whole rock and let it get exposed to the air

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This isn’t cyanobacteria?

 

[cheykaser]

This isn’t cyanobacteria?

No...its pretty firm and when I removed some of the larger peices I smashed it and it would pop it's really weird