Even millions of chewing cycles and regular contact with rocks and hard shells can’t dull sea urchins’ teeth. New research from Northwestern Engineering researchers, in collaboration with the ...

Sea urchins are perhaps best known for their armor of spines. But their mouths may be even more daunting—urchin teeth can literally chew through stone without getting dull. (Related: "Eyeless Urchins ...

Sept. 18 (UPI) --The teeth of the pink sea urchin never get dull, according to a new study that determined the creatures boast teeth that sharpen themselves. At the center of the pink sea urchin's ...

MADISON, Wis., Dec. 22 (UPI) -- U.S. researchers say the trick sea urchins use to keep their teeth razor-sharp could lead to tools for humans that never need sharpening or honing. Sea urchins can use ...

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