Pincushion secreting light milky substance

[jeffmor]

I am new to this forum and cannot find any posts about this. First time setting up a saltwater aquarium and it finally went through its cycle. 100g with sump and 145lb LR 5 snails, 5 tiny hermits, 4 green chromis and a pepermint shrimp.
I got a pincushion urchin 3 days ago and it has been very active. I noticed a few needles had fallen but not many. It crawls from one end to the other and has managed to get some crushed coral on it. The needles/tenacles are waving in the water. I was observing it and noticed it was secreting a faint white cloud of something. Is this okay? Thanks for any advice.

 

[melosu58]

Welcome to AA. Sounds like it might be spawning.

 

[jeffmor]

Well now the urchin is sideways and looks like I can see little particles coming out with the smoke like substance out of the top center. I guess I just want to make sure it is not dying on me. could it be "pooping?"