Markings on shell

[LeanneW]

Hey everyone,

Been a while since I have posted, pebble is growing big now she's is 2 this year!

I'm just wondering what these marks are in her shell? ( White marks in the shell look like little lines or spots)
I think they are to do with growth but I wanted to check
Thank you

 

[Yvonne G]

If you do a search for "white squiggly lines" you can read the several posts that have been made about these white marks. Seems no one really knows, but it's nothing to worry about.