Wondering what this might be

[block134]

Any ideas what the brownish thing is growing on the shell? Right now it is about the size of a dime

 

[redfishbluefish]

@KJ , #reefsquad

 

[sp1187]

Lobophora algae
https://reefcleaners.org/nuisance-algae-id-guide

 

[nereefpat]

If it's algae, Padina is another possibility. I'm not a macro algae expert, however.

 

[block134]

It seems to fit other pictures of Lobophora algae better. When I get home from work I see if I can get a better picture or description of it.

 

[KJ]

lobophora algae - - Image Search Results

images.search.yahoo.com