I actually don't know my turtle's sex. I'm assuming it's too young to try and figure out, but then again, I haven't really looked into sexing much since I don't intend on breeding it. I got it in December, so I estimate the time it hatched at around September or October (it was CB by the way). I would say shell length is at about 4 1/2 inches at this point. Not really sure when I can sex it.