White strings/bubbles around maxima clam?

[Frogspon]

Had this clam for a few day now, he's around 2 inches. Fully extended, foot is attached, tight mouth... seems happy!

But today it looks like there are about 3 small strings coming from various spots around his mantle? They have bubbles on the end as well.

Is this normal? Or perhaps Vermited snails on his shell? I checked and brushed him before I put him in the tank and I saw nothing.

Picture through filter:

 

[Frogspon]

Anyone?

I took him out to brush/examine his shell, but I didn't see any pests. Within a few moments the strings were back out. They appear to be coming out right at the edge of his shell?

Here is another picture:

 

[DenverSaltyFarm]

That looks like some of the slime coat from the mantle trapped bubbles. Nothing I would worry about, but you might want to increase flow around the clam a but don’t over do it

 

[DeniseAndy]

Could be some dinos too. Keep a nice flow and blow off as needed with turkey baster. Do not move that guy too much. Can be very picky IME. Good luck!