Getting rid of vermatids

[Icedog]

No need to apologize, we're all learning here.
I would call them feather dusters because that's what they look like to me just very small but I'm not sure of the technical name, perhaps @ISpeakForTheSeas can help out?

Just an fyi. I did contact @ISpeakForTheSeas and was told that they're serpulid feather duster worms - a type of feather duster with a hard shell.

Tks for your help with this.