HELP! Coraline algae?

MarineCorp

New Member
Hi All,

First time posting.
Is this Coraline algae on the rock above the mushroom? It’s hard to the touch and not slimy at all. Could it be something else?

I look forward to your replies!

Thanks.
5859d15b172af5f63bac7b38e6b68472.jpg



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