They're able to jump astonishingly well. I was shocked with my first run in with a snapper. I was 8 though and well didn't know about them then. Strong diesel of a animal. Simply fascinating, and like me quite a temper on him. Wanted to keep him as a pet. My parents quickly said no.   I don't know much about tortoises, I sure hope that poor little guy has a survival method to get out of the water.