ID foam type of thing underneath the bubble coral

[daniellegui1206]

Could anyone help to Id what’s the foam thing underneath the bubble coral? Should I clean it up?

thanks.

danni

 

[KING KONG]

Could anyone help to Id what’s the foam thing underneath the bubble coral? Should I clean it up?

thanks.

danni

Probably sponge but pic is not clear. As you say foam like thing then it can be sponge. They are harmless...