Denticles are small, tooth-like scales that cover the skin of these fish. They are made of the same material as teeth, dentine, and enamel, and they help the sharks and rays to:
* Reduce drag in the water: Denticles create a smooth surface that helps these fish move efficiently through the water.
* Protect their skin: The denticles act like armor, protecting them from predators and the environment.
* Enhance their sensory abilities: Some denticles have sensory receptors that help the sharks and rays detect changes in water pressure and movement, which helps them hunt.
So, if you're looking for denticles, head to the ocean and look for a shark or ray!