creature ID: growth on live rock

[audioaddiction]

saw lots of growth on this peice of live rock that just came in at Petco today so grabbed it with my employee discount for $5 (1 pound). it has mushroom looking growth, and green grass looking growth on it. i just found that it also came with a very very small starfish which is great , hopefully it will survive. i have two scooter blenny type fish that i'm worried will pick at this rock with horrific results! i want to catch them and get them out of this tank but it's proving to be nearly impossible with all the rock to hide in... i need to set up some sort of trap. but anyway, WHAT ARE THESE THINGS?

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[graveyardworm]

the Blue things are either mushrooms or ricordia. They are very unhappy which is making id difficult.

The green could be a type of cheatomorph. Really hard to tell from the pic. A clearer pic should take out any guess work.