Little snails all over tank?

[Jvesche20]

I don’t think these are that big of a deal but just wanted to see what’s all over the back of my tank and all over my sump. Looking closely they look like snails but not sure. There’s so many everywhere.

 

[Crabs McJones]

Spirorbid worms :)

 

[Jvesche20]

Spirorbid worms :)

Thank you!