Woody
I just saw this, it is as if you took the pics out of my book
Lithothamnion ruptile if Atlantic and
Mastophora pacifica, if Indo .I will not say 100% it is these exacty species but reallllllly looks like them. No pics of the first on the net but here is a poor pic of the other To me it looks more like thie first in my books, really hard to tell.