Turtle shell

[MTSTina]

I need some advice about this turtle’s shell....what is the white area?

I tried to take pictures from different angles.  

Edited November 8, 2020 by MTSTina

[KoolFish97]

That does look like possibly a shed Scute(part of the shell shedding) could be a minor fungal growth but highly doubt it. Looks a lot like it's most likely just a scratch or mark from a decoration rock etc. If you can feel the texture if soft a gooey its fungal or a wound so get that fixed. If hard but rough most likely damage to the shell. It will be fine just keep the turtle healthy and he will recover without any issues!!

[Speakeasy]

I know I'm late to this party....that looks like the start of a rough shed on a young terrapin....check your basking temps and replace your UVB light....if you can try to move away from CFL bulbs (curly Q bulbs) as they don't throw uv as far as people think (think zoo med) or way to much uv as some of the Amazon brands have been proven to do....and try to get em under a T5 HO or a T8 bulb if you can...he'll drop those scutes in time.  Terrapins don't shed near as often as other turtles and when they do it seems to take forever and their scutes can start to look narly  when they do