Help Multiple IDs if possible

[sweendog87]

I got this small rhodactis colony the other day and have noticed alot of other cool things on this small rock I believe the long tenticles are a spaghetti worm

and I think all these tube things could be tube worms although I never have never seen anything come out of them the just open and close and there's a lots on here

There also these little white antenna looking guys

Also could this be a ricordea mushroom it's pretty white with a green centre

Many thanks for your help in advance

 

[reef lover]

1.spagetti worm
2.tunicate or sponge maybe
3. Arm of a mini brittle starfish
4.im not sure what I'm looking at

 

[Lovemyreef2015]

I agree with reeflover.
1, spaghetti worm
2, tunicate
3, mini brittle star
4, need a better picture.
All good cuc.

 

[sweendog87]

Do brittle stars and tunicates live in rock holes or venture all over the tank cause these 2 don't move at all the star only pops 3 little arms in and out and the tunicates only open and close like a valve or something and Il take a better pic of the possible ricordea this arvo

 

[sweendog87]

So here is a better photo the red circle is what I'm thinking could be a ricordea not sure
The blue circle might be a sponge but the yellow circles I don't think are tunicates they only ever open and close nothing comes out of them and they don't move also
What you guys thought was a brittle star I'm not too sure either as it only pops in and out nothing else

 

[reef lover]

Still think yellow are tunicates, blue is a.sponge and still.uncertain on the blue...the starfish will spend most it' life in hiding....look for them at night.