Lol, such a solid first guess without even seeing it. Looks like polyps to me tho?It's always a sponge
thats a likely guess. But doesn’t look like it to me. maybe it’s just so small still?Hard skeletons? If so maybe pocillopora?
Yep, that's a sponge. /sthe poci...
Pocillopora is one of the few corals we keep that spreads that way and you have a lot already… so that’s my bet toothe poci...