Can’t figure this one out

[Doglips56]

A new critter on the glass this morning. Have never seen one like this before. Any ideas?

 

[ISpeakForTheSeas]

Can you get a picture of it under white lights?

 

[Doglips56]

I honestly think it was like a string of sand. My husband took the picture the. When I went over and looked more closely it just looked like a string of sand

 

[Cell]

Snail eggs