Shark skin

Shark skin is made up of tiny, tooth-like structures called dermal denticles, which create a smooth, rough texture. These denticles reduce water resistance, allowing sharks to swim efficiently and quickly. The microscopic ridges mimic the natural texture of a rasp or sandpaper, disrupting water flow to minimize drag and prevent parasites from attaching. This specialized skin also provides protection and helps sharks maneuver with agility. Overall, shark skin is an evolved feature that enhances their swimming capability and resilience in their aquatic environment.