Help with ID

[Wannabe Reefer]

Hi all,

Can anybody help with the below?
I don't have a clue what it is

Good or bad?

Thanks

 

[JaaxReef]

Hi all,

Can anybody help with the below?
I don't have a clue what it is

Good or bad?

Thanks

Looks like a brittle starfish living inside there to me! Not a pest at all; great member of cleanup crew!

 

[Wannabe Reefer]

Looks like a brittle starfish living inside there to me! Not a pest at all; great member of cleanup crew!

Thanks. I was worried for a sec

 

[Eagle_Steve]

Yup. Looks like micro brittle stars.

Great part of the CUC. Keeps rock pores clean. Eats left overs, algae and detritus.