When I was a Junior in high school, one class you had to do projects where you presented something to the class. I had NO idea what to do for my first one and picked survival in the wild. Mind you, I had zero interest in that kind of stuff like I do now, so in retrospect, it was ironic that I chose that topic. Anyway, I remember one of the tips for survival in a raft was to catch a turtle, immediately flip it over, slit its throat, and drink its blood. Surprising to me that someone actually claims to have done it.