Well, im on level 51 rn and i decided to tame this beutiful creature. After a wild adventure i found one and it had 1297 health. I wanted to tame it becuase they usually have around 700 health. A tribe started attacking me. My turtle was a great help so the higher the health the better it is to tame!
Ran into a lvl 145 in the water fighting a Megalodon and killed it. The Megalodon was lvl 123. Point is if your a low level and see a high level Carbonemys either don't kill it or use it as a shelter (Ride its shell)