Spot on Coral

[AydenLincoln]

What’s this little black and white spot on my bubble coral next to the baby feather duster they don’t appear to move? And possibly why my coral’s skeleton looks smaller then when I bought it. I know it’s deflated in the photo the lights were off. Halofolliculina corallasia?

 

[vetteguy53081]

what’s this little black and white spot on my bubble coral next to the baby feather duster they don’t appear to move? And possibly why my coral’s skeleton looks smaller then when I bought it. I know it’s deflated in the photo the lights were off. Halofolliculina corallasia?

That feather is actually a tube worm which emits feather for feeding
The other with dots, not sure but I would scrape it off in a container of tank water

 

[sfin52]

It looks like hydroid to me. That coral doesn't look to be in good shape. I would he more worried about the condition of the coral.