Sea urchins do not attack; their long, hard spines act more as a passive defense and require something to be pushed into them for them to react.

You won’t get stung if you lightly touch a sea urchin, but if you make contact with pressure, the sea urchin will likely sting you.

The sea urchin's tough, brittle spines are an engineering wonder. Composed of a single crystal from base to needle-sharp tip, they grow back within a few days after being broken off. Now, a team ...

Long-spined urchins are also often found in groups, with anywhere from three urchins sharing the same crevasse, to tens of thousands lining an inner reef (known as an urchin bed).

Sea urchin spines could fix bones Date: March 22, 2017 Source: American Chemical Society Summary: More than 2 million procedures every year take place around the world to heal bone fractures and ...

Christina Black, 40, soaked her foot in hot water and Epsom salts for several weeks, but the sea urchin's spine (which she named BARBara) still wouldn't budge.

The purple-spined sea urchin (Arbacia punctulata) is commonly found in shallow waters of the western Atlantic Ocean from the New England area of the United States to the Caribbean. Sea urchins play a ...

The sea urchin's tough, brittle spines are an engineering wonder. Composed of a single crystal from base to needle-sharp tip, they grow back within a few days after being broken off. Now, a team ...