Their fuzzy spines trap air, preventing the urchin from suffocating under the sand. Sea potatoes are also known as heart urchins due to the shape of their test. You can find them in the waters around ...

The calcium-filled spines that a sea urchin sting can leave behind can be ... Sea urchins are a group of spiny sea animals that are related to sand dollars and starfish. They can easily be ...

The epidemic was so severe that despite the fact that thousands of long-spined black sea urchins lived on the northern shore of the Gulf of Eilat, and they were the dominant urchin species in Eilat’s ...

The red sea urchin found in the shallow waters of the Pacific Ocean is one of the Earth's longest-living animals. The small, spiny creature can last for more than 200 years with few signs of ...

The larvae of long-spined Sea Urchin drift on a current south from New South Wales to waters in Tasmania. Due to warming climates and warmer waters, the species has taken hold, with the urchin ...

Mr. Genta designed the piece in 1994, and named it Oursin, French for sea urchin, because the spiny case reminded him of the creature, Ms. Genta said by phone recently from her home in London.