Green star polyp and tuxedo sea urchin
 

So i bought this blue tuxedo sea urchin and lucky me it has green star polyps all over it.

My question is: Is there a safe way to get the urchin to release the green star polyps that wont harm the urchin or the polyps?

Follow up question.

If yes how do i place the green star polyps on rock?

See picture below

You could try a toothpick. However, he will probably drop the gsp off himself with time

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And to fasten it to the rock you can either jut place it somewhere where the current won't blow it away or you can use some glue

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thats for the update its funny the tuxedo has picke up and dropped off a few different things since joining the tank however the gsp which came on him he has not dropped yet. I am thinking I may just leave it for now as it adds some color/uniqueness to the urchin

I can't wait until my tank is mature enough for a tuxedo urchin. They're quite the little characters with their wardrobe. 🎩