Conservationist Eileen Maher uses large spheres made of shells, sand and cement to prevent erosion and attract oysters as part of her work to manage tidelands around a Southern Californian port.

Aaah, sand. Every summer, it becomes an essential part of how beach-goers have fun—or suffer—under the sun. But love it or hate it, you may have wondered where sand comes from, why it’s ...

spines that cover a sand dollar’s body and the less typical pair of slits (bisperforata) that are found on each shell. This elegant double-slitted design made them a prized find and they reached ...

Most sand is made of rocks, minerals ... “Star sand is an empty shell of unicellular microorganisms called Foraminifera,” ‪Kazuhiko Fujita, a professor at the University of the Ryukyus ...