ID this thing for me please.

[BCReefer]

Please help me ID this coral???

I have just noticed yesterday these little greenish/black balls appearing in my tank. They weren’t there a couple of days ago but last night when I was looking in my tank I saw them.

I took some pictures but I am unable to post them until tonight

They are about 1 CM circumference, some are by themselves while others are in a group. I really, really hope they are a good thing. Please, please tell that is so. :confused:

Thanks for any help in this matter.

Patrick