Random Shark Facts:

This site proudly made in the USA
Website accessibility rating Section 508 approved by section508.info Valid XHTML 1.0 Strict - Valid CSS 2.1

Dermal Denticles? Teeth?


Hand drawn cross section of a dermal denticle.
Image Copyright K. Cathleen Lengyel

Most shark's skin has a rough feel to it, due to it's dermal denticles. What are dermal denticles? Well, just as you may guess the term "denticles" refers to teeth-like growths.

Shark's skin consists of many dermal (tooth-like growths) denticles which form various patterns in the different shark species. Dermal denticles are a sort of protective armor.

They also assist the shark with resistance for swimming, as the dermal denticles serve to trap a layer of water around the shark's body. The denticles help to channel the water which produces less friction and makes them a more efficient swimmer.

As you can see from the cross section above, dermal denticles share many characteristics with teeth.

They have a hard outer surface, pulp cavity and dentine... just like a human tooth!

Shark button linked to main school page.

plain divider line
Graphic of a shark swimming in coral.

Be sure to scroll the bottom menu above the sea lion's nose in order to click the links.

Menu : Home : Shark School : Shark Links : Shark Art : Poem : About : Contact :
Legal Pages: Copyright : Privacy : Terms :