Please help ID coral

[NuraNori]

Hi,

I got this Blastomussa and it came with 2 others on it. There's the green guy on the bottom growing out of a brown mat and the brain type looking guy on the left. Just wondering if anyone knows what they are b/c I figure they're still small enough that I could break the rock apart. Then again would they hurt each other if I left them on the same rock? I realize they might be too small/young to tell.

Thanks so much!

ps: Sorry, that's the best my camera can do...

pps: I circled them in photoshop (on pic1)and named them 1 and 2, just to make it easier...