Posted: Tue May 26, 2009 1:56 am
Excessive skin shedding can have a number of causes. Sometimes when a turtle has been living in unsanitary or harsh conditions, then moves to a clean place, he/she will shed skin very heavily for a short time, then settle down to normal. I found my turtle in circumstances somewhat similar to yours. He was in the back yard under a pile of leaves in November. It was cold and I think he was near death from dehydration, cold and starvation. He shed very heavily for several weeks - his poor skin came off in grey sheets. Then, thank goodness, it got normal.
Heavy shedding can also be a sign of skin infection. If it persists, then that's what I'd suspect.
Turtles will also shed heavily when they are overfed and when their water is too warm. I doubt that's what's happening to your turtle since apparently he was out on his own for some period.
SpotsMama