Identification Help

[rwillo]

My tank is about 14 month old and approximately 2 months ago I observed this for the first time. It is about 1/2 inch in diameter and is white and looks similar to a starfish except it has seven arms. I did not purchase this so it must be a hitchhiker on my live rock. Just strange took over a year to observe.
I hope the attached photo helps.
Thanks,

 

[tizzo]

Asterina starfish. Most of them are safe, so I wouldn't worry about it.