Hydroids?

[jonesdeini]

I'm not sure if these are hydroids on my calm. Thankfully it's in QT right now. I've never seen them IRL before so I'm not sure what I'm looking for.

Edit: I am worried about the smaller white-ish things on the edge of the clam; not the spirorbid worms.

 

[GaryE]

Nope, spirorbid worms. They're ok. Filter feeders.

 

[GaryE]

One of my snails.

 

[jonesdeini]

Sorry for not being more specific, I know the large(in the picture) white circular tubes are spirorbid worms.

I am worried about the smaller white-ish things on the edge of the clam

 

[NASOTANG87]

Sorry for not being more specific, I know the large(in the picture) white circular tubes are spirorbid worms.

I am worried about the smaller white-ish things on the edge of the clam

It’s hard to tell from the picture but they could be. Are they green?