But unlike the hard planes of a normal crystal, the sea urchin's teeth are made of an intricate, interlocking web of dazzling blue, green and purple sections of the mineral. [See the Winning ...

The sea urchin's intricate mouth and teeth are the model for a claw-like device developed by a team of engineers and marine biologists to sample sediments on other planets, such as Mars.

Sea urchin teeth also contain crystals of magnesium calcite, which are harder than pure calcite. The concentration of magnesium in the crystals increases towards the tooth's tip, which is used for ...

Oh, that’s a pink sea urchin! D: Can I touch it? It won’t bite, will it? Y: It probably won’t bite you, but it does have really sharp teeth that researchers learned sharpen themselves.

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 ...

Y: Let me see. Oh, that’s a pink sea urchin! D: Can I touch it? It won’t bite, will it? Y: It probably won’t bite you, but it does have really sharp teeth that researchers learned sharpen ...

A species of sea urchin is turning parts of the south-eastern ... They're herbivores that use their five massive teeth to scrape away at kelp and other types of seaweed. However, not all sea ...

The green sea urchin, Strongylocentrotus droebachiensis ... This complicated mouth consists of five sharp, teeth-like structures that can move independently to scrape off crusty algae.

Sea urchins are globe-shaped creatures that live on the ocean floor. Many beachgoers have had the misfortune to feel a sting from their spines, but how much do you know about the lives of these ...

The sea urchin's intricate mouth and teeth are the model for a claw-like device developed by a team of engineers and marine biologists at the University of California, San Diego to sample ...