This is a spotted turtle that came in recently suffering from the inability to submerge. The most common cause for this is actually pneumonia, which creates debris in the lungs. This causes large bubbles of air to be trapped, making the turtle into something like a balloon. With these pockets of air making him float, this little guy then can’t swim down below the surface of the water. He got to us while he was still in decent shape though, so with some antibiotics and time to rest he should do fine 🙂