Despite its smooth external appearance, at the micro level, it has a coarse texture thanks to thousands of tiny teeth-like scales called dermal denticles.

鲨鱼的皮肤还有别的独到之处，虽然从外面看上去十分光滑但是在显微镜下有着粗糙的纹路鲨鱼皮肤表面布满了成千上万微小的齿状麟片。