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 ...

Watch debris from the sea bottom fly, as octopuses hurl sand and other projectiles at their ... stacks and carries coconut shells, which it uses to build a "mobile home." But octopuses, as a ...