It's so funny. If I keep my finger there he'll just repeatedly bite it over and over again until I pull it out of the water. My other turtle bites once, realizes I am not food, then swims away.
hahaha yeahh when he gets a bit bigger, this would just be stupid on my part. Even now, sometimes he gets me pretty good, but since he's little the callouses on my fingers are too thick for it to matter.