For the turtle on top, the pic is a bit blurry but most likely yes. I'd treat it as soon as possible because it will spread if untreated. Do you have any silver sulfadiazine cream?
Thanks steve! Both of my turtles' shell are better now. But the pther pne's sick. She doesnt eat and it seems to be blowing off some bubbles on its nose. Why? I give both of fhem the same treatment tho.