As I went out back our house in South NJ to attempt to close our pool, found this little guy just floating and not moving. Actually thought it was dead until he "turtled up" when I picked him up. At first I thought he was a water turtle of some kind since it was in the pool but from pictures online of baby box turtles having that almost spine looking protrusion. So any help identifying this little guy is appreciated! Thanks
https://i.imgur.com/iyZ7MQu.jpg
https://i.imgur.com/G82x5Dn.jpg
https://i.imgur.com/3gz7TUB.jpg
https://i.imgur.com/qRz5zaC.jpg
