Water marks on bottom of shell?

[Tamara4613]

My tortoise is 7 months old and has never had these marks before but I noticed them 2 days ago are they normal they kinda look like water marks or water under the shell. If you look closely and zoom in on the picture you can see it

 

[wellington]

They are normal and nothing to worry about.

 

[Tom]

My tortoise is 7 months old and has never had these marks before but I noticed them 2 days ago are they normal they kinda look like water marks or water under the shell. If you look closely and zoom in on the picture you can see it

Normal and not harmful.