ID my critters #2

bristle worms and a starfish

 

neither will do harm to your tank, the bristle worms might hurt you if you grab them bare handed though

 

those are huge bristle worms though wow

 

I think it might be a little star fish that makes them look big. I think they are about a inch and a quarter.
So should I let them live or flush them?

 

let'm live

 

Yea that's perfectly normal. I used to have tons of little serpent like stars that set up stations on my live rock. I don't know if I can call them serpent stars though, they had about 10 really thin legs...