Starfish?

[DD0513]

Saw these sticking up out of a piece of live rock. Thought maybe a starfish. When my scrub brush came near they sucked in, but cam right back out. What are your thoughts?

Thanks for your help!

 

[DD0513]

Saw these sticking up out of a piece of live rock. Thought maybe a starfish. When my scrub brush came near they sucked in, but cam right back out. What are your thoughts?

Thanks for your help!

Also, if it is, does it look like a reef safe species?

 

[fishguy242]

micro bittle ,good guy...

 

[tbrown]

+1 micro brittle star.