We know that our teeth are largely composed of a mineral and it is softer than that found in sharks. But, lemme tell you something: our teeth are as tough as shark’s. According to a research, the enameloid coating on shark teeth is no harder than that of the enamel on a human wisdom tooth. So, next time you’re bitten by a shark, fight! Bite it back, okay? The truth is, our teeth surfaces aren’t pure mineral.