denticle

the shark's denticles provide a rough texture to its skin.

denticles help reduce drag while swimming.

some species of fish have denticles on their scales.

the denticle structure is essential for the fish's hydrodynamics.

researchers study denticles to understand fish evolution.

shark skin is covered in tiny denticles.

the denticle pattern varies among different shark species.

denticles can be used to identify species of fish.

some scientists believe denticles play a role in communication.

examining denticles can reveal information about a fish's habitat.