Help -white spots on shell

Hi – I posted before about this. I have now posted some pics in the album titled white spots. They may not be very good but hopefully they will help. My dbt developed theses spots a week or two ago and I need to know if it is something he should see a vet for. I hope it is just shedding but I am worried. I have only had the little guy about a month or so. Any info will be greatly appreciated. Thanks much