What do I do with this?

[Kat Fish]

Just got some coral via mail order. I’ve placed them all in my tank after dipping, all except this one. I did see only little worm come off it when I did the dip. I have it in a quarantine tank because I have no idea what to do. please advise…

 

[Sharkbait19]

Looks like some kind of sponge in the center, usually harmless.

 

[Kat Fish]

I wondered, so do you think that the worm that came off it was just up and around the sponge and not a sack of worms? LOL

 

[Rmckoy]

Looks stressed …
It will open up

 

[Sharkbait19]

I wondered, so do you think that the worm that came off it was just up and around the sponge and not a sack of worms? LOL

That’s what I would guess.