Tiny white nautilus shells

[Cohibaman]

Hi all,

Long time since my last post. A quick question..what are these, worm carcasses? They are calcareous, brittle/fragile and crush very easily. They're all over my rocks and starting to annoy me.

 

[olemiss reb]

Spirorbid worms

 

[Sugar Magnolia]

Spirorbid worms

Yes, this.

 

[Cohibaman]

Thanks!